The bat star can range in size from four to eight inches in diameter. They have five short triangular arms that are webbed, which is why it is called the bat star. The bat star’s colors are commonly seen as reddish-orange but can also be found in other colors such as brown, green, purple or pink. To avoid predators, they secrete chemicals that stimulate violent escape responses in other animals. Reproduction is done by the males and females releasing their eggs and sperm into the ocean. Fertilization of the egg occurs when it meets the sperm anywhere in the ocean. Bat stars can be found on rocks, sandy beach bottoms, and surf grass. They are most abundant in the kelp forests along the west coast.
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