Echinoderm - Wikipedia
Echinoderms - Smithsonian Ocean
Echinoderms - MarineBio Conservation Society
They are characterized by a unique radial symmetry and a spiny or prickly outer skin. The name “echinoderm” translates to “ spiny skin,” which describes their appearance. Echinoderms include several familiar organisms such as …
Sea urchin - Wikipedia
Sea urchins move slowly, crawling with their tube feet, and sometimes pushing themselves with their spines. They feed primarily on algae but also eat slow-moving or sessile animals. Their predators include sea otters, starfish, wolf …
Echinoderm - Radial Symmetry, Tube Feet, Spines
2024年9月30日 · Echinoderms exhibit a variety of skeletal structures. In the echinoids, a hollow test (skeleton) consisting of 10 columns of plates bears large and small spines as well as pincerlike organs ( pedicellariae ) used in defense …
Phylum Echinodermata | manoa.hawaii.edu/ExploringOurFluidEarth
The Wonders of the Seas: Echinoderms - Oceanic …
The sea urchins are well known to most people, having a large number of sharp spines pointing out in all directions. These spines offer protection from many would-be predators. The spines are joined to the skeleton of the animal, …
Echinoderm | Definition, Characteristics, Species,
2024年9月30日 · Echinoderm, any of a variety of invertebrate marine animals belonging to the phylum Echinodermata, characterized by a hard, spiny covering or skin. Living species include sea lilies, sea urchins, sea cucumbers, …
The internal morphology of primary spines of extant regular …
Echinoderm Spines 的相关搜索