Starfish to starfish by the French zoologist de Blainville in 1830. It is derived from the Greek "aster", ἀστήρ (a star) and the Greek "eidos", εἶδος (form, likeness, appearance). The class Asteroidea belongs to the phylum Echinodermata. As well as the starfish, the echinoderms include sea urchins, sand dollars, brittle and basket stars, sea cucumbers and crinoids. The larvae of echinoderms have bilateral symmetry, but during metamorphosis this is replaced with radial symmetry, typically pentameric. Adult echinoderms are characterized by having a water vascular system with external tube feet and a calcareous endoskeleton consisting of ossicles connected by a mesh of
Pacific spiny lumpsucker Pacific spiny lumpsucker The Pacific spiny lumpsucker, scientific name Eumicrotremus orbis, is a species of bony fish in the Cyclopteridae family. The pacific spiny lumpsucker is a globular shaped fish that typically measures in length, with a maximum known length of around . The body of the fish is covered in cone-shaped plates, called tubercles. Females are dull green in color, while males are dull orange to reddish brown. The pacific spiny lumpsucker's anal fin has evolved into a large suction cup, allowing it to attach to surfaces. Pacific spiny lumpsuckers are most commonly found attached to solid objects and