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Seafloor ecosystem engineers

Brittle stars, an alternate common name is the 'serpent stars', are a species-rich class of echinoderms with outstanding regenerative abilities. Living under rocks or in crevices with only the tips of the arms exposed, they are known to be seafloor ecosystem engineers. They reshape the seafloor sediment surface and influence the distribution of other seafloor species. They also provide nutrition to fish, sea stars and crab predators.

Their presence in a sediment sample is one indicator of a healthy benthic community. They embody nature's fragility and resilience.

Shot from the Three Pools shoreline during low tide.

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Uploaded on January 20, 2025