From shelf to slope and canyon depths: 30-1335 m. [details]
Southern California Bight, along shelf depths in fine sediments. [details]
The species is named for the Hyperion Sewage Treatment Plant, City of Los Angeles, for the support and ... [details]
In mixed sediments (muddy sand, silty sand, sand, pebbles, shells, gravel). [details]
Fine sediments (sandy silt, silty sand, sandy mud) at shelf depths. [details]
Dorsey & Phillips (1987) searched unsuccessfully for the holotype of Syllis (Ehlersia) heterochaeta at the ... [details]
Pacific Ocean, Southern California (USA), Santa Monica Bay (33º52'27"N, 118º34'12"W). [details]