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 …

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 …

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 abundant in cold and...

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 …

2024年5月27日 · Jellyfish are prehistoric marine creatures and have been known to exist in oceans for the past millions of years. Though they are not usually aggressive, these fish are …

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 …

Jellyfish are animals of the phylum Cnidaria. They are a monophyletic clade, the Medusozoa. [1] . Most of them live in the oceans, in salt water. They eat small sea animals like plankton and …

People refer to a number of different invertebrate creatures as “Jellyfish.” However, researchers place the true Jellyfish in the taxonomic class Scyphozoa. They currently recognize about 200 …

Jellyfish and comb jellies are gelatinous animals that drift through the ocean's water column around the world. They are both beautiful—the jellyfish with their pulsating bells and long, …

Jellyfish are gelatinous aquatic animals belonging to the subphylum Medusozoa. These free-swimming invertebrates evolved around 500 million years ago and have been roaming the …