Fighting behavior consists of pushing and laying an arm over the other. Behavior īat stars may gently 'fight' with each other if they meet. The sperm and egg unite at sea and are carried away by ocean currents. The male casts sperm and the female drops eggs each has pores at the base of the rays for this purpose. The bat stars reproduce through spawning. Histones are labeled in blue, actin filaments in orange. Reproduction Bat star bipinnaria at fourth day of development Photographed using confocal microscopy.

It is omnivorous, eating both plants and animals alive or dead. To eat its prey, it covers the prey with its stomach and oozes digestive juices over it this liquefies the food, enabling the bat star to ingest it. It has visual sensors at the end of each ray that can detect light and note prey. It lacks the pincers or pedicellariae that most starfish use to clean the skin surface of debris, but its small, moving hairs or cilia may create enough of a water current to keep the surface of its skin clean.

The bat star breathes through gill-like structures on its back that perform as respirators. Anatomy īat stars can be many different types of colors. However, recent revisions based on molecular systematics have constrained Asterina and identified Patiria as a complex of three closely related species in the Pacific, including P. The genus of this species has transitioned back and forth between Asterina and Patiria since its inclusion in Fisher's 1911 North Pacific Asteroidea monograph. It is most abundant along the coast of Central California and the Monterey Bay. Its range extends from Sitka, Alaska to Baja California in the Pacific Ocean. The bat star is usually found in the intertidal zone to a depth of 300 metres (980 ft). The bat star gets its name from the webbing between its arms, which is said to resemble a bat's wings. Bat stars occur in many colors, including green, purple, red, orange, yellow and brown, either mottled or solid. Although the bat star usually has five arms, it sometimes has as many as nine. It typically has five arms, with the center disk of the animal being much wider than the stubby arms are in length. Patiria miniata, the bat star, sea bat, webbed star, or broad-disk star, is a species of sea star (also called a starfish) in the family Asterinidae.

Starfish skin color