Centrostephanus tenuispinus, commonly known as the Centrostephanus tenuispinus, is a species of sea urchin belonging to the family Diadematidae. These echinoderms are characterized by their distinctive spines and play a crucial role in the marine ecosystem.
Description & Characteristics
Centrostephanus tenuispinus is a large sea urchin, reaching a maximum size of approximately 10 cm in diameter. Its test, the hard, bony shell that encloses the body, is typically dark brown or black in color. The urchin’s most prominent feature is its numerous, long, and slender spines, which are often tipped with a sharp point. These spines provide protection from predators and assist in movement.
Habitat and Occurrence
Centrostephanus tenuispinus is primarily found in rocky intertidal and subtidal zones, typically inhabiting depths ranging from the low tide mark to approximately 30 meters. This species prefers areas with strong wave action and abundant algae, which serves as its primary food source. It is commonly found in the northeastern Pacific Ocean, including areas along the coast of California, Oregon, and Washington. These zones are characterized by temperate waters, providing suitable conditions for this species to thrive.
Taxonomy
Centrostephanus tenuispinus belongs to the Class Echinoidea, which encompasses all sea urchins. It falls under the Order Diadematoida, a group of sea urchins known for their long, sharp spines. This species is further classified within the Family Diadematidae, a family known for its large size and distinctive spines.
Feeding
Centrostephanus tenuispinus is an herbivore, feeding primarily on algae, particularly red algae. The urchin uses its spines to scrape algae off rocks and other surfaces. Its feeding habits are crucial for maintaining the balance of the marine ecosystem, as they help control the growth of algae and create space for other organisms.
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