Brittle stars can reproduce asexually in two ways. When one or more arms and a portion of the central body break off, both pieces of the brittle star will grow new bodies and arms to form two animals. read more
Starfish can either spawn together, or they can asexually reproduce- though this isn't the ideal way to produce new starfish because it doesn't promote genetic diversity within the species. While sexual reproduction is a naturally occurring process, asexual reproduction for starfish is usually only the result of dismemberment that results in the formation of two whole starfish with the same DNA. read more