Bat star Bat star The bat star ("Patiria miniata"), also known as a sea bat, webbed star, and broad-disk star, is a species of sea star (also called a starfish) in the family Asterinidae. It typically has five arms, with the center disk of the animal being much wider than the stubby arms are in length. Although the bat star usually has five arms, it sometimes has as many as nine. Bat stars occur in many of colors, including green, purple, red, orange, yellow and brown, either mottled or solid. The bat star gets its name from the webbing between its arms,
Crown-of-thorns starfish damage includes a major section of the disk together with arms, the number of arms regenerating on the disk may be less than the number lost. Another hypothesis is the "aggregation hypothesis", whereby large aggregations of "A. planci" appear as apparent outbreaks because they have consumed all the adjacent coral. This seems to imply that there is apparently a dense population outbreak when there has already been a more diffuse population outbreak that has been dense enough to comprehensively prey on large areas of hard coral. Female crown-of-thorns starfish are very fecund. Based on the eggs in ovaries, 200, 300