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Echiurid Bed (Biotic Group)

Component: Biotic

Unique Identifier: 528

Biotic Setting Benthic/Attached Biota
Biotic Class Faunal Bed
Biotic Subclass Soft Sediment Fauna
Biotic Group Echiurid Bed
Biotic Community Echiurus Bed
Listriolobus Bed
Urechis Bed

Definition Soft-sediment areas dominated by unsegmented echiurids or "spoon worms" which are abundant on the U.S. west coast in both intertidal and subtidal habitats. This group also includes communities where U-shaped echiurid burrows constitute the dominant or characteristic faunal feature, even if all animals have retracted into their burrows and cannot be seen.