Marine life individuals per square meter and accounting for about 80% of all individual animals on earth, their diversity of life cycles, and their presence at various trophic levels point at an important role in many ecosystems. Echinoderms (Greek for "spiny skin") is a phylum which contains only marine invertebrates. The adults are recognizable by their radial symmetry (usually five-point) and include starfish, sea urchins, sand dollars, and sea cucumbers, as well as the sea lilies. Echinoderms are found at every ocean depth, from the intertidal zone to the abyssal zone. The phylum contains about 7000 living species, making it the second-largest
Pacific spiny lumpsucker females lay large, spherical, orange-colored eggs on rocks. Females typically lay around 200 eggs at a time. After the eggs are laid, the male attaches himself to a nearby surface where he cares for the eggs by defending them from predators and circulating water over them with his fin. Pacific cod, sablefish, and lancefish are known predators of pacific spiny lumpsuckers. 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