WebThis Phylum has animals of many shapes and sizes and includes the jellyfish, hydra, sea anemones, and corals. Though these vary greatly, there are a few anatomical features they all have in common. • They are all … WebJun 22, 2024 · Cells in the mantle secrete all the proteins, chitin, and minerals necessary to create the shell. Mollusks never shed their shells, so the creatures must increase their …

Phylum - Cnidaria (Jellyfish, Anemones, Corals, …

WebJul 20, 2024 · As it grows bigger, a mollusc uses its soft body tissue (the mantle) to lay down more layers of shell made chiefly of calcium carbonate, the same chalky material as a hen’s eggshell. Like tree rings, seashells have seasonal growth lines that are sometimes visible from the outside. WebAnswer (1 of 8): Limiting the answer to the mollusks: * Using its mantle the animal generates a sheet of protein with a surface texture that exactly mirrors the crystalline shape of aragonitic calcium carbonate. * Aragonite crystals aggregate on the sheet in much the same way that odor molecul... christopher lusby wilson nc

Sea slug - Wikipedia

A seashell or sea shell, also known simply as a shell, is a hard, protective outer layer usually created by an animal or organism that lives in the sea. The shell is part of the body of the animal. Empty seashells are often found washed up on beaches by beachcombers. The shells are empty because the animal has died and the soft parts have decomposed or been eaten by another animal. Web^ to top. Seashells by the seashore. The most common finds, however, are shells of marine molluscs. "The diversity of mollusc species increases significantly as you move from temperate to tropical ... WebAug 22, 2015 · Sea Urchin Anatomy One look at a sea urchin and you can see why they would be called sea hedgehogs. They have hard rounded shells covered with sharp movable spines. Urchins are part of the … gettin wiggy sam and cat