Achelia alaskensis
Achelia chelata
Medium
Achelia gracilis
Achelia sawayai
Medium
Pacific brown-banded sea-spider
Ammothea hilgendorfi
Medium
Ammothella appendiculata
Medium
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Ammothella biunguiculata
Ammothella marcusi
Ammothella rugulosa
Ammothella spinifera
Ammothella symbia
Anoplodactylus batagensis
Medium
Anoplodactylus californicus
Medium
Anoplodactylus erectus
Anoplodactylus evelinae
Anoplodactylus glandulifer
Anoplodactylus insignis
Medium
Lentil Sea Spider
Anoplodactylus lentus
Medium
Anoplodactylus maritimus
Anoplodactylus monotrema
Anoplodactylus pectinus
Anoplodactylus petiolatus
Medium
Anoplodactylus viridintestinalis
Anoropallene palpida
Ascorhynchus latipes
Ascorhynchus serratus
Bathypallenopsis calcanea
Bathypallenopsis californica
Medium
Callipallene brevirostris
Medium
Callipallene californiensis
Callipallene emaciata
Colossendeis gracilis
Colossendeis tenera
Medium
Gedoornde zeespin
Endeis spinosa
Eurycyde bamberi
Eurycyde clitellaria
Nymphon apheles
Nymphon floridanum
Nymphon lituus
Medium
Nymphon pixellae
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Nymphopsis duodorsospinosa
Nymphopsis spinosissimum
Pallenoides spinulosum
Medium
Spiny-thigh Sea Spider
Phoxichilidium femoratum
Pigrogromitus timsanus
Pycnogonum reticulatum
Medium
Pycnogonum rickettsi
Medium
Pycnogonum de Stearns
Pycnogonum stearnsi
Rhynchothorax percivali
Rhynchothorax philopsammum