Pisaster ochraceus, generally known as the purple sea star, ochre sea star, or ochre starfish, is a common seastar found among the waters of the Pacific Ocean. Identified as a keystone species, P. ochraceus is considered an important indicator for the health of the intertidal zone. [2]

2023年3月31日 · Ochre sea stars stand out in the intertidal due to their vibrantly contrasting color differences, ranging from bright orange to purple. Data from long term monitoring has shown a consistent color frequency of approximately 20% orange stars across a large geographic range of exposed coast (Raimondi et al. 2007).

Ochre sea stars are found on the rocky intertidal shores of the Pacific coast, ranging from Alaska to California. They inhabit the middle to low intertidal zones and can also be found subtidally on rocks down to depths of 90 meters.

Learn the scientific name, discover the habitat, diet and special characteristics of the Ochre Sea Star with the Georgia Aquarium.

Ochre sea stars were once an abundant part of Oregon’s rocky intertidal zone. Their bright orange, red, and purple bodies are still a favorite sight for tide pool visitors, but their numbers have been greatly reduced by sea star wasting syndrome.

Our common ochre sea stars ("starfish") can survive many years in tidepools by being patient and tough: they cling tightly to the rock and move slowly by using the rows of tube feet on the underside; small plates just under the surface makes their bodies rather hard and a little stiff.

Habitat: Rocky shore; mid- to subtidal zones. Fun Fact: When a sea star loses an arm it can regrow a new one. And in some cases, a whole new sea star can grow from a lost arm!

Sea star wasting disease in the keystone predator Pisaster ochraceus in Oregon: insights into differential populations impacts, recovery, predation rate, and temperature effects from long-term research.

ochre stars. Kingdom. Animalia. Location in Taxonomic Tree . Genus. Pisaster. Species. Pisaster ochraceus. Identification Numbers. TSN: 157253. Geography. Launch Interactive Map. Working with others to conserve, protect and enhance fish, wildlife, plants and their habitats for the continuing benefit of the American people.

2023年6月13日 · So far, the mystery continues. This species is found in the rocky, shallow intertidal shores of the Pacific coast from Alaska to California. Predominantly occurs in nearshore and estuarine waters. The sea star wasting syndrome is negatively affecting this species.