Search results
Jellyfish, also known as sea jellies, are the medusa-phase of certain gelatinous members of the subphylum Medusozoa, which is a major part of the phylum Cnidaria. Jellyfish are mainly free-swimming marine animals with umbrella-shaped bells and trailing tentacles, although a
Jun 20, 2024 · Learn about jellyfish, marine invertebrates with about 200 species, some of which have stinging cells and others that are sessile or filter feed. Find out how they reproduce, where they live, and what threats they face.
- The Editors of Encyclopaedia Britannica
Learn about jellyfish, the ancient invertebrates that float on ocean currents and sting their prey. Find out how they eat, where they live, and why they are sometimes dangerous to humans.
Oct 4, 2018 · Given their diverse evolutionary history, jellies exhibit a fantastic range of shapes, sizes, and behaviors. Learn all about these squishy, brainless, beautiful creatures. Also make sure to read...
- 4 min
- 4.5M
- Nat Geo WILD
- Jellyfish Sting
- Bioluminescence
- Jellyfish in Space
Jellyfish are known for their sting! These animals have tentacles that have tiny sting cells on them called cnidocytes. These cells have tiny structures inside them that are full of venom, called nematocysts. When something touches a jellyfish these nematocysts shoot out and can penetrate the skin of the animal. The jellies use this mechanism to he...
Many jellyfish species have the ability to produce their own light, in a process known as bioluminescence. This light is used primarily as a form of communication between animals and can be used for defense, offense, and intraspecific communication. The greatest diversity in jellyfish bioluminescence occurs in deeper water, where nearly every kind ...
Jellyfish are so cool they have even traveled into space! In 1991, some moon jellyfish were sent into outer space on board the Space Shuttle Columbia. This mission was a study conducted by scientists to understand how microgravity affected them. While in space, the number of jellyfish multiplied. On their return to Earth, the scientists examined th...
- Scyphozoa
- Animalia
- 21
- Cnidaria
Dec 13, 2019 · Common Name: Jellyfish, jellies. Basic Animal Group: Invertebrate. Size: Bell diameter of two-tenths of an inch to over six and a half feet. Weight: Under an ounce to 440 pounds. Lifespan: Vary between a few hours to a few years. Diet: Carnivore, Herbivore. Habitat: Oceans throughout the world. Population: Unknown.
Oct 29, 2009 · Explore the diversity and beauty of jellyfish, the ancient invertebrates that thrive in all ocean habitats. See stunning images of mosaic, moon, and other jellyfish species.
