How do starfishes eat?
Starfish
Some species of starfish are able to reproduce asexually as adults either by fission of their central discs[45] or by autotomy of one or more of their arms. Which of these processes occurs depends on the genus. Among starfish that are able to regenerate their whole body from a single arm, some can do so even from fragments just 1cm (0.4in) long.[46] Single arms that regenerate a whole individual are called comet forms. The division of the starfish, either across its disc or at the base of the arm, is usually accompanied by a weakness in the structure that provides a fracture zone.[47]