Marine scientists have undertaken the difficult task of replacing the beloved starfish's common name with sea star because, well, the starfish is not a fish. It's an echinoderm, closely related to sea urchins and sand dollars.
There are some 2,000 species of sea star living in all the world's oceans, from tropical habitats to the cold sea floor. The five-arm varieties are the most common, hence their name, but species with 10, 20, and even 40 arms exist.
They have bony, calcified skin, which protects them from most predators, and many wear striking colors that camouflage them or scare off potential attackers. Purely marine animals, there are no freshwater sea stars, and only a few live in brackish water.
Beyond their distinctive shape, sea stars are famous for their ability to regenerate limbs, and in some cases, entire bodies. They accomplish this by housing most or all of their vital organs in their arms. Some require the central body to be intact to regenerate, but a few species can grow an entirely new sea star just from a portion of a severed limb.
Most sea stars also have the remarkable ability to consume prey outside their bodies. Using tiny, suction-cupped tube feet, they pry open clams or oysters, and their sack-like cardiac stomach emerges from their mouth and oozes inside the shell. The stomach then envelops the prey to digest it, and finally withdraws back into the body.
A sea snail is an invertebrate.
Almost anything in the sea is an invertebrate, including fish and sharks
A sea urchin is an echinoderm
Is a earthworm a vertebrate
Yes , sea star is an invertebrate .
Yes it is a invertebrate
They are neither.
the starfish or sea star is an Invertebrate.star fish are not invertabrate
yes
Yes , sea star is an invertebrate .
Invertebrates
Star fish belong to the Phylum Enchindodermata Latin for "Spiny Skin". A phylum is the classification right under Kingdom. Star fish belong to the class Asteroidea which is Latin for "Starlike."
yes it happens to be one
Star fish is an invertebrate. It comes under the phylum Echinodermata of non- Chordates.
Because it doesn't have a back bone.
A sea star has an exoskeleton, not a back bone. Which makes it an invertebrate.
the differences is that a fish has