1 天前 · Pacific sea nettles, Chrysaora fuscescens Cnidaria (/ nɪˈdɛəriə, naɪ -/ nih-DAIR-ee-ə, NY-) [4] is a phylum under kingdom Animalia containing over 11,000 species [5] of aquatic invertebrates found both in fresh water and marine environments (predominantly the latter), including jellyfish, hydroids, sea anemones, corals and some of the smallest marine parasites. …

2025年1月17日 · Jellyfish, any planktonic marine member of the class Scyphozoa (phylum Cnidaria), a group of invertebrate animals composed of about 200 described species, or of the class Cubozoa (approximately 20 species). Learn more about the characteristics and natural history of jellyfish in this article.

3 天之前 · Some jellyfish and turtles eat large quantities of ctenophores, and jellyfish may temporarily wipe out ctenophore populations. Since ctenophores and jellyfish often have large seasonal variations in population, most fish that prey on them are generalists and may have a greater effect on populations than the specialist jelly-eaters.

2025年1月6日 · Box jellyfish, (class Cubozoa), any cnidarian (or coelenterate) belonging to the class Cubozoa. The class is made up of approximately 50 species, which are known for their semitransparent box-shaped bell and the toxic venom produced by some species. Box jellyfish live in warm coastal marine waters

4 天之前 · The box jellyfish is often regarded as one of the most venomous creatures inhabiting the world’s oceans. Belonging to the class Cubozoa, these gelatinous sea creatures have captivated the attention of marine biologists and enthusiasts alike. Their cube-shaped, transparent bodies house tentacles ...

4 天之前 · These elusive deep-sea creatures have a 3.3-foot-wide (1 meter) bell and four ribbon-like arms that grow up to 33 feet (10 m) long, making them among the largest invertebrate predators in the ocean.

5 天之前 · Jellyfish exhibit remarkable diversity, with thousands of species inhabiting oceans, from the shallows to the depths. Some species, like the moon jellyfish, are found in coastal waters and estuaries, while others, such as the deep-sea jellyfish, inhabit the darkest reaches of the ocean.

2 天之前 · A modular worm robot built by the Organic Robotics Lab and a jellyfish that was a collaboration with the Archer Group, both in Cornell Engineering, demonstrate the benefits of "embodied energy"—an approach that incorporates power sources into the body of a machine, to reduce its weight and cost.

2025年1月21日 · Factors such as the species of the jellyfish and its environmental conditions determine how long a jellyfish can live. They usually have a life span of 1–3 years.

2025年1月2日 · In jellyfish planula larvae and polyps, lipids and lipid-like molecules are the most abundant metabolites, followed by organic acids and their derivatives, organic heterocyclic compounds, and organic oxygen compounds. In comparison with planula larvae, 13 metabolites were significantly increased while 212 were significantly decreased.