搜尋結果
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
2024年6月20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
2018年10月4日 · How much do you really know about jellyfish? Given their diverse evolutionary history, jellies exhibit a fantastic range of shapes, sizes, and behaviors. Learn all about these squishy,...
Jellyfish. Jellyfish have drifted along on ocean currents for millions of years, even before dinosaurs lived on the Earth. The jellylike creatures pulse along on ocean currents and are...
2009年10月29日 · Jellyfish aren’t fish but invertebrates, animals that lack backbones and even brains. Yet 30,000-odd species do far more than survive—they thrive in ocean waters the world over.
2020年12月3日 · Jellyfish, also known as jellies, are fascinating animals that spend their lives floating in the oceans. Unlike their name suggest, jellyfish are not really fish as they lack a backbone. In fact, these animals are actually invertebrates and they are more closely related to corals, sea anemones, and sea whips than fish.
2019年12月13日 · 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.
2024年3月29日 · A jellyfish eats by stinging its prey and using the oral arms to waft the food towards its mouth – which is also its anus – and into its stomach. Jellyfish eat small fish, fish larvae, shrimp, tiny crustaceans such as krill and copepods, small shrimp-like organisms called amphipods and tiny plants such as algae.
2023年10月19日 · How much do you really know about jellyfish? Given their diverse evolutionary history, jellies exhibit a fantastic range of shapes, sizes, and behaviors. Learn all about these squishy, brainless, beautiful creatures.
2024年2月27日 · Remarkably diverse jellyfish species populate all oceans. More than 2,000 identified types drift through tropical to arctic waters, ranging in sizes from a nearly microscopic Irukandji jellyfish with bells smaller than a fingernail up to the Giant Nomura’s jellyfish with six-foot-wide bells weighing 450 pounds.
