Yes, several. Most crinoids are sessile and live their life attached to underwater rocks, as do several starfish species.
yes they do live atached to rocks some of them
To be technical, Echinoderms do not spend time caring for their young. They have sex, give birth, then believe it or not some eat them.
Hydras can commonly be found in freshwater lakes, and some species can live in saltwater environments. They are usually found near the shore as most species are sessile and live their life attached to rocks.
all echinoderms live in salt water like in oceans and seas. They are in every ocean. Most adult echinoderms live on the ocean floor in salt water feeding on different sea animals. Many echinoderms can be found in tide pools along beaches or in oceans. the tide pools can support a variety of echinoderms and is changed every time the tide goes out.There are sea stars under the ice in the Antarctic and up in the north, Bering sea and around parts of northern Europe. Many are meat eating predators while some are grazers of algae.
The major difference between echinoderms and other invertebrates is that there are few examples echinoderms that do not live in ocean water and none live on land. There are examples of other invertebrates that live in both fresh and salt water and on land. Echinoderms also display radial symmetry as do the jellyfish and sea anemones. If you want to tag the one thing that echinoderms have that no other living invertebrate has, you would probably have to point to their water vascular system (see link). If you have the McGraw Hill science textbook for 6th grade then you are all set. Look on pages A40-A48.
No they don't, some live on rocks and some on snow but live in the ocean just near water.
both of them live in the ocean every where and they are echinoderms
Some types can
Some do but not all.
they are in the shape of a star
Starfishes, sea urchins, and sea lilies all belong to the phylum echinodermata. Like some other invertebrates, echinoderms live their lives entirely in water. They can be recognized by their spiny skin and by their five part radial symmetry.
i depends some seaweed live under water some on rocks but they mostly live near the beach