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Strongylocentrotus purpuratus is a species of sea urchin in the family Strongylocentrotidae commonly known as the purple sea urchin. It lives along the eastern edge of the Pacific Ocean extending from Ensenada, Mexico, to British Columbia, Canada. [1]
31 Μαρ 2023 · Purple sea urchins are an ecologically important coastal species that aids in regulating kelp forests densities through algal grazing (Osovitz and Hoffman 2015). Purple urchins are usually detritovores, however when kelp litter is reduced urchins can shift from drift feeding to active foraging on macroalgae (Carr and Reed 2016).
The Purple Sea Urchin is one of the most common sea urchins found on Sydney's coast. Identification. Colours can vary so dramatically in this species, from light olive green to pink to a dark purple, that the Purple Sea Urchin was once thought to be three separate species.
The purple sea urchin thrives amid strong wave action and areas with churning aerated water. The giant kelp forests provide a feast for S. purpuratus . Many sea urchins can be found on the ocean floor near the holdfast of the kelp.
Purple sea urchins, like all sea urchins, are the porcupines of the sea. They have long spines in order to deter predators. Even the name, Sea Urchin, comes from the Old English term for spiny hedgehog. The Arbacia punctulata has a deep purple color all over the spines and body (test).
Sphaerechinus granularis is a species of sea urchin in the family Toxopneustidae, commonly known as the violet sea urchin, [2] or sometimes the purple sea urchin (though the latter is also a common name for a Pacific sea urchin Strongylocentrotus purpuratus).
The purple sea urchin, Strongylocentrotus purpuratus, lives along the eastern edge of the Pacific Ocean extending from Ensenada, Mexico to British Columbia, Canada. This sea urchin species is deep purple in color, eggs are orange when secreted in water, and lives in lower inter-tidal and nearshore sub-tidal communities.
