Crustacean
Yes, limestone from areas where shelled sea creatures are highly abundant typically contains more carbonate. Shelled sea creatures like mollusks and corals have shells made primarily of calcium carbonate. Over time, as their shells accumulate and get compacted, they form limestone. As a result, limestone from these areas will have a higher carbonate content compared to limestone from areas without such abundant sea creatures.
Sea anemone are cnidarians.
Fish
Sea Stars, also know as starfish, belong to the animal group echinoderms.
Sea anemones, coral and jelly fish belong to the group of Cnidarians.
The sea cucumber belongs to the same animal group as the starfish, the echinoderms.
The two main types of shelled sea creatures are mollusks and crustaceans. Mollusks, such as snails, clams, and octopuses, typically have soft bodies and may possess hard shells for protection. Crustaceans, including crabs, lobsters, and shrimp, have an exoskeleton made of chitin that serves a similar protective function. Both groups play vital roles in marine ecosystems and human diets.
They belong to the class Anthozoa.
That depends, obviously, on the species of Sea Urchin. All belong to the Phylum Echinodermata (along with sea stars and sea cucumbers) and to the Class Echinoidea. They are then divided into different orders, genera and species. That depends, obviously, on the species of Sea Urchin. All belong to the Phylum Echinodermata (along with sea stars and sea cucumbers) and to the Class Echinoidea. They are then divided into different orders, genera and species.
Three examples of sedimentary rock are: slate (which is compressed silt or mud); sandstone (which is compressed sand grains); limestone (which is the skeleton remains of minute shelled sea creatures).
Clam
No, starfish generally do not make sounds. They are one of the quietest sea creatures out there! They belong to the phylum Echinodermata family!