Orange bat sea stars are one of a variety of bat stars that come in an array of colors also including yellows, purples and reds. They are all easily identified by the webbing between their five to nine arms. Bat sea stars, also known as sea bats, will eat just about anything including each other and often engage in slow-paced combat on rocks and the sea floor over access to food. They are common in grassy, rocky nearshore waters of the Pacific from Sitka Sound in Alaska to Baja, Mexico. The greatest threat to their habitat comes from pollution.