The ocean is home to some incredible creatures, and jellyfish are among the most fascinating. Known for their soft bodies, jellyfish come in many shapes and sizes. Some species grow to enormous sizes, making them the giants of the ocean. Here’s a look at the top-10 largest jellyfish species in the world’s oceans.
World’s Largest Jellyfish
The world’s largest jellyfish is the Lion’s Mane Jellyfish (Cyanea capillata), found in the cold waters of the Atlantic and northern Pacific Oceans. Its bell can grow over 7 feet wide, and its tentacles can reach an impressive 120 feet—longer than a blue whale! This jellyfish uses its many tentacles to catch small fish and plankton as it drifts along ocean currents.
Key Facts Related to World’s Largest Jellyfish
Here are some key facts about the world’s largest jellyfish, the Lion’s Mane Jellyfish:
- Species: Lion’s Mane Jellyfish (Cyanea capillata), one of the largest known jellyfish species.
- Habitat: Found in cold waters of the Arctic, northern Atlantic, and northern Pacific Oceans.
- Size: Bell can reach 210 cm (7 ft) wide; tentacles up to 36.6 m (120 ft) long.
- Unique Appearance: Known for long, flowing tentacles resembling a lion’s mane.
- Life Cycle: Reproduces both sexually and asexually with four life stages.
- Sting: Can sting humans, causing pain and redness; vinegar helps neutralize stings.
- Predators: Eaten mainly by sea turtles, especially leatherback turtles.
- Longest Animal: Among the longest animals in the world, surpassing even blue whales.
- Pop Culture: Featured in “The Adventure of the Lion’s Mane” by Sir Arthur Conan Doyle.
- Common Names: Also called Arctic Red Jellyfish, Hair Jelly, and Sea Blubber.
Top-10 Largest Jellyfish Species in the Ocean
Lion’s Mane Jellyfish (Cyanea capillata), found in the cold waters of the Atlantic and northern Pacific Oceans, stands as the largest jellyfish species in the world, followed by Nomura’s Jellyfish, Pink Meanie and Stygomedusa gigantea.
Here is the list of top-10 largest jellyfish species in the ocean:
Top-10 Largest Jellyfish Species in the Ocean | ||||||
Rank | Name | Scientific Name | Bell Size | Tentacle Length | Location | Key Facts |
1. | Lion’s Mane | Cyanea capillata | 7 feet | 120 feet | Atlantic Ocean, northern Pacific Ocean | The largest known jellyfish, with up to 1,000 tentacles that capture prey with bioluminescent light. |
2. | Nomura’s Jellyfish | Nemopilema nomurai | 6 feet | 6 feet | China, Japan | Weighing over 400 pounds, it disrupts fishing by becoming entangled in nets. |
3. | Pink Meanie | Drymonema larsoni | 3 feet | 70 feet | Gulf of Mexico | Has over 200 stingers on average, and preys on other jellyfish. |
4. | Stygomedusa gigantea | Stygomedusa gigantean | 3 feet | No tentacles | Pacific Ocean | Found near ocean floor at 7,000 feet depth, it has four arms that can reach up to 30 feet. |
5. | Sea Nettle | Chrysaora | 3 feet | 6 feet | Pacific Ocean (California, Hawaii, Japan) | The Black Sea Nettle is dark maroon and was the largest invertebrate species described in the 20th century. |
6. | Tiburonia | Tiburonia granrojo | 2.5 feet | No tenctacles | Monterey Bay, California | Known for its purple stripes, it often travels with crabs that eat its parasites. |
7. | Purple Striped Jelly | Chrysaora colorata | 2.3 feet | 1 foot | Monterey Bay, California | Known for its purple stripes, it often travels with crabs that eat its parasites. |
8. | Barrel Jellyfish | Rhizostoma pulmo | 1.5 feet | 8 inches | Irish Sea, Coastal UK | Also known as the “dustbin-lid fish,” it’s a favorite meal of the leatherback turtle. |
9. | Venus’s Girdle | Cestum veneris | No bell | No tentacle | Mediterranean Sea | Appears as a translucent purple ribbon. It has small tentacles on one side and a mouth on the opposite side. |
10. | Sea Wasp | Chironex fleckeri | 20 inches | 30 inches | South Pacific, Australia, New Zealand | Known as the most lethal jellyfish, causing over 65 human deaths. |