Starfish by the starfish in an escape response. The loss of parts of the body is achieved by the rapid softening of a special type of connective tissue in response to nervous signals. This type of tissue is called catch connective tissue and is found in most echinoderms. An autotomy-promoting factor has been identified which, when injected into another starfish, causes rapid shedding of arms. The lifespan of a starfish varies considerably between species, generally being longer in larger forms and in those with planktonic larvae. For example, "Leptasterias hexactis" broods a small number of large-yolked eggs. It has an adult
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