The Moon Jellyfish (Aurelia aurita) is also known as the 'jelly', 'crystal jellyfish', 'common jellyfish', 'saucer jelly' or 'swimming jellyfish...Australia does have native lake jellyfish ( Australomedusa species) living in salt lakes in Victoria, South Australia and Western Australia. These are minute – only a couple of millimetres across – and very poorly known. They are too small and fragile to be detected during most surveys of wetlands. Two species are known and there are ...21 types of jellyfish. Quicklinks to the different types of jellyfish we've featured: 1. Moon jellyfish. 2. Fried egg jellyfish. 3. Crystal jellyfish. 4. Lion’s mane …Barrel jellyfish - The largest jellyfish found in UK seas. They are translucent with a huge mushroom shaped bell and a bunch of 8 frilly tentacles below. They don't have marginal tentacles, but do have a violet fringe around the bell. They are often found washed up on beaches in May and June. Lion's mane jellyfish ©Alex Mustard/2020VISION.Nov 21, 2023 · Some species of jellyfish, such as the golden jellyfish, produce extremely potent venom. True | False 6. Bioluminescence is a common phenomenon in marine animals found in the shallow ocean. Although most jellyfish are found in coastal waters, a freshwater species Craspedacusta sowerbyi is sometimes found in New Zealand lakes. There are several.The Sea Nettle is a jellyfish species commonly found in the Atlantic and Pacific Oceans waters. They have distinctive bell-shaped bodies with long, flowing tentacles that reach up to 8 feet long. Box Jellyfish. This is one of the most venomous species in the world. They have a box-shaped bell and long tentacles that deliver a powerful sting.Dec 13, 2019 · Jellyfish come in a wide variety of shapes and sizes. The largest is the lion's mane jellyfish (Cyanea capillata), which can have a bell over six and a half feet in diameter and weigh up to 440 pounds; the smallest is the Irukandji jellyfish, several species of dangerous jellyfishes found in tropical waters, which measure only about two-tenths of an inch and weigh well under a tenth of an ounce. Although most jellyfish are found in coastal waters, a freshwater species Craspedacusta sowerbyi is sometimes found in New Zealand lakes. There are several.That new species of jellyfish was given the binomial, Tima nigroannulata. The jellyfish is about the size of a human hand, has a black ring around the bell with 53 tentacles. It has fluorescent qualities under ultraviolet light and a complex life history. Tima nigroannulata.. “We are in a technologically revolutionary time,” said Holland. Description of the Jellyfish. These creatures come in an immense variety of shapes and sizes. Generally, their bodies consist of a rounded bell with a mouth on the underside. Shorter tentacles and longer stinging arms generally grow from the bell. Size varies drastically from species to species. These jellyfish are one of the largest species of known jellyfish in the world. Their tentacles can sometimes grow to be over 100 feet long, though you won’t have to worry about finding those in Kitty Hawk, as these larger jellies are found in the Arctic. These jellyfish are often brown or red with a thick “mane” of hairlike tentacles. Hong Kong Jellyfish Species Information. The Agriculture Fisheries and Conservation Department (AFCD) records 6 species of jellyfish that have been found in Hong Kong waters - Cyanea nozakii, Mastigias papua, Aurelia aurita, Stomolophus meleagris, Pelagia panopyra and Acromitus flagellatus. Information on each species is below. Jellyfish of New Zealand; Print Jellyfish of New Zealand Jellyfish and relatives found around New Zealand's coasts. All 18; Origin; Indigenous 4; ... room for notes on the right. Species info will be truncated to fit on the page. Taxa to include. All taxa in this guide 18 taxa matching current filters Note: most browsers have an option to print ...Turritopsis dohrnii, also known as the immortal jellyfish, is a species of small, biologically immortal jellyfish [2] [3] found worldwide in temperate to tropic waters. It is one of the few known cases of animals capable of reverting completely to a sexually immature, colonial stage after having reached sexual maturity as a solitary individual.The Aurelia Aurita, known as the moon jelly, is the most common and widely recognized jellyfish species.Though it has venom, it is harmless to humans—it’s even a popular dish in China! The umbrella on the Aurelia Aurita can reach 30 to 40 centimeters, with marginal tentacles and gonads arranged in four circles.Jellyfish are marine invertebrates belonging to the Scyphozoan class of the Cnidaria phylum. The body of an adult jellyfish is composed of a bell-shaped, jellylike substance enclosing its internal structure, from which the creature's tentacles suspend. ... Many species of jellyfish are also capable of congregating into large swarms or "blooms ...“Every page of text in Jellyfish has facts as fascinating as these, woven into a thorough coverage of jellyfish history, biology and ecology. Gershwin, a marine biologist who has discovered over 200 new species of jellyfish, does an excellent job of combining a compelling narrative of 50 different jellyfish with luscious, I-can’t-believe-they’re-real …The most commonly reported species of jellyfish in Hong Kong and widely distributed in local waters. Nick Thompson. Mastigias papua (albipunctatus) - common name: Papuan sp otted jellyfish. This medium-sized species can be found throughout the Western Pacific, from Japan to the Indian Ocean and Red Sea. It can grow up to 8 cm wide and has been ...Many species of New Zealand jellyfish were first described in other parts of the world, a number by German biologist Ernst Haeckel, who illustrated them vividly, particularly in Kunstformen der Natur (opposite). Evidently something is out of balance, but, as many species suffer, the jellyfish prospers. As larger oceanic creatures are fished out ...Turritopsis dohrnii, the so-called "immortal jellyfish," can hit the reset button and revert to an earlier developmental stage if it is injured or otherwise threatened. Like all jellyfish, Turritopsis dohrnii begins life as a larva, called a planula, which develops from a fertilized egg. A planula swims at first, then settles on the sea floor ...Wikimedia Commons In years past, Jellyfish Lake was home to an estimated 5 million golden jellyfish. Without the sun, these organisms would die, robbing their hosts of important, life-giving energy. While the daily jellyfish migration is incredible in its own right, the migration pattern also plays an important role in the lake's ecosystem.Medusae are a type of free-swimming, umbrella-shaped jellyfish with a reduced stalk. The new species is reported in an article published in the journal Zootaxa . André Morandini, last author of ...That new species of jellyfish was given the binomial, Tima nigroannulata. The jellyfish is about the size of a human hand, has a black ring around the bell with 53 tentacles. It has fluorescent qualities under ultraviolet light and a complex life history. Tima nigroannulata.. “We are in a technologically revolutionary time,” said Holland.Jellyfish species show great diversity in color. Species may be white, orange, yellow, pink, red, purple, or blue. Moon jellyfish are translucent, as are ...Jellyfish from the Deep. (NOAA) A hydromedusa, seen at just over 12,800 feet and just above the seafloor along the west wall of Mona Canyon.Cannonball jellyfish; And sea wasps; Most of the stings from jellyfish in this region only cause mild discomfort. Some species have more severe stings, but it’s highly unlikely that a jellyfish sting in Topsail will be fatal or require medical attention — only the relatively rare sea wasp should cause concern.More than 100 species of jellyfish have been recorded along the Great Barrier Reef, including the notorious stinging blue bottles and box jellyfish. One of ...1. Crystal Jellyfish. Coming in at number one is the Crystal jellyfish. Located in the waters around North America’s coast, this jellyfish species is …These jellyfish are one of the largest species of known jellyfish in the world. Their tentacles can sometimes grow to be over 100 feet long, though you won’t have to worry about finding those in Kitty Hawk, as these larger jellies are found in the Arctic. These jellyfish are often brown or red with a thick “mane” of hairlike tentacles.Jellyfish from the Deep. (NOAA) A hydromedusa, seen at just over 12,800 feet and just above the seafloor along the west wall of Mona Canyon.In this blog post, we will explore the different types of jellyfish and their unique characteristics. There are over 3,000 species of jellyfish that have been identified, and new species are being discovered all the time. These species are grouped into several different categories based on their physical characteristics and behaviour.Conclusion. The majority of jellyfish species will live for between 12 and 18 months, but some might survive longer with proper care. Immortal jellyfish, on the other hand, can live forever thanks to a special process that allows them to regenerate and live longer. This process is unique to this species of jellyfish.Topics. Animal Kingdom. Tutorials. Latest News. Jellyfish. By: Lindy Whitehouse, Ph.D. Reviewed by: BD Editors. Last Updated: December 3, 2020. …In this blog post, we will explore the different types of jellyfish and their unique characteristics. There are over 3,000 species of jellyfish that have been identified, and new species are being discovered all the time. These species are grouped into several different categories based on their physical characteristics and behaviour.Jellyfishes are soft-bodied free-swimming invertebrates. The lack of any bones or shell means their marine environment supports their jelly-like body.Turritopsis dohrnii, also known as the immortal jellyfish, is a species of small, biologically immortal jellyfish [2] [3] found worldwide in temperate to tropic …21 types of jellyfish. Quicklinks to the different types of jellyfish we've featured: 1. Moon jellyfish. 2. Fried egg jellyfish. 3. Crystal jellyfish. 4. Lion’s mane …5,000 people have been stung by bluebottle jellyfish on beaches in Australia’s Gold Coast and Sunshine Coast. You might want to wait a couple of weeks before hitting the beach in A...Contents show. 26 Types of Jellyfish Species. 1. Moon Jellyfish. The Moon Jellyfish is a unique sea creature often seen in coastal waters …Hundreds of jellyfish species live in every part of the ocean and belong to the same animal group as corals and sea anemones. Soft-bodied, fragile, and often ... Jellyfish typically reproduce in three broad stages, varying slightly among species. Initially, a polyp asexually buds off from an adult jelly's upper end. In some species, normal fusion of egg and sperm results in an embryo that is brooded in the gut of the adult until it becomes a planula larva, but in other species, this process takes place externally. The Irukandji jellyfish is a small species with a bell-like feature measuring only 1 cm in diameter and four delicate tentacles extending up to a meter in length. Its translucent bell-like part is almost entirely transparent, making it difficult to spot in the water. The jellyfish’s four tentacles contain thousands of tiny, venomous cells ...The Largest Known Species. The lion’s mane comb jellyfish (Cyanea capillata) holds the record as the largest known species, with tentacles that can exceed 120 feet in length. Predators and Defense Mechanisms. Comb jellyfish have a few predators, including sea turtles, fish, and some larger species of jellyfish.Crystal Jellyfish (aequorea sp) 11. Indonesian Sea Nettle (chrysaora chinensis) 12. Lions Mane Jellyfish (cyanea capillata) 13. Warty Comb Jelly (mnemiopsis leidyi) All photos taken with a Canon 5D Mark III and 35 mm f/1.4 L lens. There are more species of jellyfish, but these were the ones that came out best in photos.Team discovers new box jellyfish species in Hong Kong. Apr 18, 2023. Two new species of worms discovered off Japan's Ryukyu Islands. Nov 16, 2023. Lion's mane jellyfish. The lion's mane jellyfish ( Cyanea capillata ), also known as the giant jellyfish, arctic red jellyfish, or the hair jelly, [2] is one of the largest known species of jellyfish. Its range is confined to cold, boreal waters of the Arctic, northern Atlantic, and northern Pacific Oceans. Jellyfish eat their prey by first paralyzing them by stinging them, and then drawing the prey in through the mouth, which is a hole in the middle of the jellyfish’s body, reports N...I would say that they are Sanderia malayensis. Pink coloration, lacy oral arms, marginal tentacles and somewhat painful sting. Only issue is like u/SpaceJ3lly said, they aren't known to bloom/aggregate. Also, they are a bit too far south of the equator to be in Australian waters. But visually they would be the closest match to the ones in the ...The Australian box jellyfish (Cubozoa) is the world’s deadliest jellyfish and marine animal in the world. They are native to Australia and surrounding waters. There are about 30 to 50 species of box jellyfish in the Indo-Pacific and the coastal waters of Australia. All these species produce a deadly venom that is extremely painful .Learn about the different types of jellyfish, their anatomy, behavior, and distribution. Discover how many species of jellyfish exist, how they reproduce, and why so…Australia is home to a variety of jellyfish species, including the box jellyfish, bluebottle, and Irukandji jellyfish. These creatures can be found in coastal waters across the country and pose a significant risk to swimmers and beachgoers. It is important to understand the characteristics and behaviors of each species to stay safe while enjoying …Weight: Up to 2kg. Body size: 2cm to 2m. Top speed: 8km/h. Diet: Fish, shrimp, crabs, tiny plants and even other species of jellyfish. Habitat: Oceans. Range: Jellyfish have been around for millions of years, even …The immortal jellyfish can regenerate and live forever. The immortal jellyfish, sometimes called the Benjamin Button jellyfish, is one of the only known animals that possess full regenerative capabilities, as well as being the only species of jellyfish with an indefinite lifespan.It was first documented in 1883 in the Mediterranean Sea. However, …The Moon Jellyfish (Aurelia aurita) is also known as the 'jelly', 'crystal jellyfish', 'common jellyfish', 'saucer jelly' or 'swimming jellyfish...Yes, jellyfish do have genders. Some species of jellyfish are hermaphrodites, meaning they have both male and female reproductive organs, while others are either male or female. Hermaphroditic jellyfish are capable of self-fertilization as well as fertilizing others of their own species. In sexual reproduction, male jellyfish …The secrets of the immortal jellyfish, Earth's longest-living animal - BBC Science Focus Magazine. How does the immortal jellyfish (Turritopsis dohrnii) live for so long? A leading scientist the stranger cellular science behind the creature's lifespan.The Irukandji jellyfish is a small species with a bell-like feature measuring only 1 cm in diameter and four delicate tentacles extending up to a meter in length. Its translucent bell-like part is almost entirely transparent, making it difficult to spot in the water. The jellyfish’s four tentacles contain thousands of tiny, venomous cells ...The most commonly reported species of jellyfish in Hong Kong and widely distributed in local waters. Nick Thompson. Mastigias papua (albipunctatus) - common name: Papuan sp otted jellyfish. This medium-sized species can be found throughout the Western Pacific, from Japan to the Indian Ocean and Red Sea. It can grow up to 8 cm wide and has been ...Types of Jellyfish Facts and Information . There are more than 2,000 different Jellyfish species that have been identified. They range significantly in color, size, and dimensions. Experts believe that there …That new species of jellyfish was given the binomial, Tima nigroannulata. The jellyfish is about the size of a human hand, has a black ring around the bell with 53 tentacles. It has fluorescent qualities under ultraviolet light and a complex life history. Tima nigroannulata.. “We are in a technologically revolutionary time,” said Holland.Common Name: Golden Jellyfish ; Scientific Name: Mastigias papua etpisoni ; Type: Invertebrates ; Group Name: Smack ; Size: Up to 5.5 inches.The Irukandji jellyfish is a small species with a bell-like feature measuring only 1 cm in diameter and four delicate tentacles extending up to a meter in length. Its translucent bell-like part is almost entirely transparent, making it difficult to spot in the water. The jellyfish’s four tentacles contain thousands of tiny, venomous cells ...Jellyfish of New Zealand; Print Jellyfish of New Zealand Jellyfish and relatives found around New Zealand's coasts. All 18; Origin; Indigenous 4; ... room for notes on the right. Species info will be truncated to fit on the page. Taxa to include. All taxa in this guide 18 taxa matching current filters Note: most browsers have an option to print ... There are more than 2,000 different Jellyfish species that have been identified. They range significantly in color, size, and dimensions. Experts believe that there are still plenty of unknown species that live deeper down on the ocean waters. They are excited that one day technology will allow them to find these Jellyfish and to explore them ... Box Jellyfish (Chironex fleckeri): Although known for their potent sting, box jellyfish also interact with fish species. Some small fish, such as the mangrove jack, have developed immunity to their venom and use the tentacles of box jellyfish for protection against predators.The Moon Jellyfish (Aurelia aurita) is also known as the 'jelly', 'crystal jellyfish', 'common jellyfish', 'saucer jelly' or 'swimming jellyfish... 11. Atolla jellyfish (Atolla wyvillei) Atolla jellyfish (Atolla wyvillei). Photo Credit: NOAA Ocean Exploration ( CC BY-SA 2.0) Also called the alarm jellyfish, crown jellyfish, or coronate medusa, this type of jellyfish is a deep sea species that is surely interesting to look at. Box Jellyfish (Chironex fleckeri): Although known for their potent sting, box jellyfish also interact with fish species. Some small fish, such as the mangrove jack, have developed immunity to their venom and use the tentacles of box jellyfish for protection against predators.February 2, 2023 by Faisal Abedin. Jellyfish come in a variety of colors, including pink, blue, purple, yellow, and translucent. The color of a jellyfish can be influenced by a variety of factors, including its species, environment, and diet. For instance, the moon jellyfish is typically translucent with a white or pale blue color.jellyfish, Any of about 200 described species of free-swimming marine cnidarians (in the classes Scyphozoa and Cubozoa), many of which have a bell-shaped body. The term is also frequently applied to other similar cnidarians (e.g., Portuguese man-of-war) and some unrelated forms (e.g., ctenophores and salps). In scyphozoan jellyfish, the free …Taxonomy: available through. Identification: Craspedacusta sowerbii is a hydrozoan (Phylum Cnidaria, Class Hydrozoa), which is most easily identified when it takes the form of a small, bell-shaped jellyfish, known as a hydromedusa. The hydromedusa measures about 5–25 mm in diameter, and is translucent with a whitish or greenish tinge (Peard ...3. Drymonema larsoni. The Drymonema larsoni is commonly known as the pink jelly from its body color . It feeds on other jellyfish and is, therefore, common in areas with many of them. An adult pink jelly is about 67 inches long, …Now, a new paper published in the journal PeerJ reveals that the sea nettle jellyfish in the Chesapeake Bay are actually a different, distantly related species from sea nettles found in the open ocean. For the last 175 years, scientists have assumed these two common jellyfish were a single species.The immortal jellyfish can regenerate and live forever. The immortal jellyfish, sometimes called the Benjamin Button jellyfish, is one of the only known animals that possess full regenerative capabilities, as well as being the only species of jellyfish with an indefinite lifespan.It was first documented in 1883 in the Mediterranean Sea. However, … Hong Kong Jellyfish Species Information. The Agriculture Fisheries and Conservation Department (AFCD) records 6 species of jellyfish that have been found in Hong Kong waters - Cyanea nozakii, Mastigias papua, Aurelia aurita, Stomolophus meleagris, Pelagia panopyra and Acromitus flagellatus. Information on each species is below. Jellyfish are characterized by an umbrella-shaped body containing a jellylike substance (mesoglea), between upper and lower surfaces, which acts as a buoyancy aid. Three types are recognized: true jellyfish (Scyphozoa), hydromedusae (Hydrozoa) and colonial Siphonophora and Chondrophora. About 110 species are found in Canadian …It consist of 4 major classes, namely Cubozoa, Hydrozoa, Scyphozoa, Staurozoa. These classes are further divided into orders, which is further divided into families. … Lion's mane jellyfish. The lion's mane jellyfish ( Cyanea capillata ), also known as the giant jellyfish, arctic red jellyfish, or the hair jelly, [2] is one of the largest known species of jellyfish. Its range is confined to cold, boreal waters of the Arctic, northern Atlantic, and northern Pacific Oceans. Dec 14, 2022 ... There are more than 2000 types of jellyfish in the world. And those are just the species that we know about! These strange yet wonderful ...Key Takeaways. Certain jellyfish species possess highly potent venom that poses a significant threat to humans.; The box jellyfish is known for its dangerous sting, which has resulted in fatalities. Immediate and appropriate treatment of jellyfish stings is critical to mitigate the potentially severe effects.5,000 people have been stung by bluebottle jellyfish on beaches in Australia’s Gold Coast and Sunshine Coast. You might want to wait a couple of weeks before hitting the beach in A...There are roughly 200 species of the true jellyfish, but as we do DNA analysis we’re finding a lot of cryptic jellyfish. There’s probably another two thousand hydrozoan jellyfish , which is a ...Jan 21, 2024 · Chironex fleckeri. Common Names: Box Jellyfish, Australian Box Jellyfish, Sea Wasp. Origin: Indo-Pacific region; primarily in Northern Australia and Southeast Asia. Habitat: Coastal waters of the Pacific and Indian Oceans. Size: Up to 30 cm in diameter; up to 3 m in tentacle length.
The Sea Nettle is a jellyfish species commonly found in the Atlantic and Pacific Oceans waters. They have distinctive bell-shaped bodies with long, flowing tentacles that reach up to 8 feet long. Box Jellyfish. This is one of the most venomous species in the world. They have a box-shaped bell and long tentacles that deliver a powerful sting.. Free monopoly coins
Jellyfish Lake ( Palauan: Ongeim'l Tketau, lit. 'Fifth Lake') is a marine lake located on Eil Malk island in Palau. Eil Malk is part of the Rock Islands, a group of small, rocky, mostly uninhabited islands in Palau's Southern Lagoon, between Koror and Peleliu. There are about 70 other marine lakes located throughout the Rock Islands. Aurelia aurita (also called the common jellyfish, moon jellyfish, moon jelly or saucer jelly) is a species of the family Ulmaridae. All species in the genus are very similar, and it is difficult to identify Aurelia medusae without genetic sampling; most of what follows applies equally to all species of the genus.. The jellyfish is almost entirely translucent, usually …Cannonball jellyfish is toxin producing, and its sting can lead to cardiac ailments in humans. 4. Moon jellyfish. The moon jellyfish (Aurelia aurita) is a translucent jellyfish species inhabiting the world’s oceans. The species grows to between 10-16 inches in diameter. They are notable for their exquisite coloring.The oldest examples of swimming jellyfish, which lived in Earth’s oceans 505 million years ago, have been discovered high within the Canadian Rockies. Researchers found 182 fossils encased ...In fact, jellyfish numbers have been rising in the area and the threat of serious stings from box jellyfish has been known to close certain beaches in Oahu during swarms; especially Southern facing beaches. The types of jellyfish you might see in Oahu are: Box jellyfish (several species) White-spotted jellyfish. Spotted jellyfish.Here are 10 unique jellyfish species that are both fascinating and beautiful. 1. of 10. Cauliflower Jellyfish. Jao Cuyos / Getty Images. The …Turritopsis dohrnii, also known as the immortal jellyfish, is a species of small, biologically immortal jellyfish [2] [3] found worldwide in temperate to tropic waters. It is one of the few known cases of animals capable of reverting completely to a sexually immature, colonial stage after having reached sexual maturity as a solitary individual.Some jellyfish only become stronger after being attacked by robots. Specifically, the jellyfish-shredding robots of the Jellyfish Elimination Robotic Swarm, or JEROS, developed by ...For scientists, however, jellyfish are fascinating research subjects – they play important roles in the marine ecosystem and are a key source of food for some fish and sea turtles. Some even protect commercially valuable species, such as oysters, from predators. Whatever your view may be, many misconceptions exist about jellyfish.The Sea Nettle is a jellyfish species commonly found in the Atlantic and Pacific Oceans waters. They have distinctive bell-shaped bodies with long, flowing tentacles that reach up to 8 feet long. Box Jellyfish. This is one of the most venomous species in the world. They have a box-shaped bell and long tentacles that deliver a powerful sting.Cyanea capillata, also known as a lion’s mane, arctic red, or sea blubber jellyfish, is one of the largest species of jellyfish, although the ones in the Pacific Northwest are quite a bit smaller than their southern counterparts.. Up here, they can reach about two feet in diameter around the medusa. Closer to the equator, they can reach … Lion's mane jellyfish. The lion's mane jellyfish ( Cyanea capillata ), also known as the giant jellyfish, arctic red jellyfish, or the hair jelly, [2] is one of the largest known species of jellyfish. Its range is confined to cold, boreal waters of the Arctic, northern Atlantic, and northern Pacific Oceans. A jellyfish may have from eight to hundreds of tentacles depending on its species. Jellyfish tentacles also vary greatly in size, from a few feet to over a hundred feet in length. ... Scientific Name. Chironex fleckeri. Common Names. Australian Box Jelly, Box Jelly, Box Fish. Natural Habitat. Coastal waters of the Pacific and Indian Oceans. Size. Length - up to 10 feet (3 m), Bell size - up to 1 foot (30 cm) in diameter. Venomous Rating. Like other jellyfish species, Moon Jellies comprise 95% water and lack complex organs like a brain or heart, relying on a simple network to navigate and feed. They have a two-stage life cycle, starting as polyps that attach to rocks and then developing into the medusa stage, the free-floating form we recognize.Golden Jellyfish. Jellyfish are known for drifting to and fro at the whim of ocean currents—but not all species are so passive. The millions of golden jellyfish that pack Palau’s Jellyfish ...Jellyfish are marine invertebrates belonging to the Scyphozoan class of the Cnidaria phylum. The body of an adult jellyfish is composed of a bell-shaped, jellylike substance enclosing its internal structure, from which the creature's tentacles suspend. ... Many species of jellyfish are also capable of congregating into large swarms or "blooms ...Like other jellyfish species, Moon Jellies comprise 95% water and lack complex organs like a brain or heart, relying on a simple network to navigate and feed. They have a two-stage life cycle, starting as polyps that attach to rocks and then developing into the medusa stage, the free-floating form we recognize.The bodies of all box jellyfish in their adult, or free-swimming medusa, form resemble a box-shaped bell, with clusters of tentacles trailing from each corner of the bell. Depending upon the species, the bell’s diameter can range in size from 1–30 cm (0.4–11.8 inches), and the tentacles can extend up to 3 metres (9.8 feet) in length.4. Costa Rican Jellyfish. This jellyfish is beautiful in an uncharacteristic way and looks very different from other types of jellyfish. It is also known as Stauromedusae and is stalked and does have the life cycle like other jellyfish that alternates vegetative and sexual reproductive stages..