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Thousands of Sea Cucumbers Strand on Oregon’s Seaside Beach After Heavy Surf and Low Tide

Aquarium staff attribute the short-lived stranding to heavy surf coinciding with a low tide.

Overview

  • The gelatinous invertebrates were scattered across more than 2 miles of Seaside Beach on Tuesday, according to Seaside Aquarium.
  • Identified as skin-breathing sea cucumbers (Leptosynapta clarki), the stranded individuals observed were about a half-inch long though the species can reach roughly 6 inches.
  • Staff said the animals cannot return to the water on their own, will dehydrate on the sand, and will be eaten by tideline invertebrates as they break down.
  • The aquarium described the episode as a natural event that occurs when surf and tide align, ranging from a few times a year to once every few years.
  • Most remnants are expected to dry out and disappear within a couple of days, with staff anticipating they will be gone by Wednesday or Thursday.