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Region: PAC

Geographic Zones: Davidson Rock

Survey Types: Fish Only, Invertebrates Only, Fish & Invertebrates

Dates: 1/1/93 - 11/3/24

Total Surveys: 7

#Species Reported: 58

Average Species Reported on a Survey by Expert Surveyors: 30.75

Average Species Reported on a Survey by Novice Surveyors: 21.33

Survey Type: FO = Fish Only; IO = Invertebrates Only; FI = Fish & Invertebrates - How to interpret REEF data?
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Click a column header to sort by that column. Hold shift and click to sort by multiple columns

SurveysBottom Time
ExpertNovice
CodeNameFOIOFIFOIOFI(H:M)
2Washington0040036:04
22SAN JUAN ISLANDS0040036:04
2212Lopez Island0040036:04
22120022Davidson Rock0040036:04
TOTALS0040036:04

Species

%SF = Sighting Frequency; DEN = Density Score - How to interpret REEF data?
Bar length corresponds to sighting frequency
Color saturation corresponds to density score
Click + to display species image and additional information.
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Copper Rockfish - Scorpionfish
(Sebastes caurinus)
SF: 100% | DEN: 2.29
Kelp Greenling - Greenling
(Hexagrammos decagrammus)
SF: 100% | DEN: 2
Puget Sound Rockfish - Scorpionfish
(Sebastes emphaeus)
SF: 100% | DEN: 3.57
Quillback Rockfish - Scorpionfish
(Sebastes maliger)
SF: 100% | DEN: 1.86
Red Sea Urchin - Echinoderms
(Mesocentrotus franciscanus)
SF: 100% | DEN: 2.29
Black Rockfish - Scorpionfish
(Sebastes melanops)
SF: 85.71% | DEN: 2.33
California Sea Cucumber - Echinoderms
(Parastichopus californicus)
SF: 85.71% | DEN: 1.83
Coonstripe Shrimp - Arthropods
(Pandalus danae / gurneyi)
SF: 85.71% | DEN: 2.17
Gumboot Chiton - Mollusks
(Cryptochiton stelleri)
SF: 85.71% | DEN: 2.33
Lingcod - Greenling
(Ophiodon elongatus)
SF: 85.71% | DEN: 1.83
Orange Cup Coral - Cnidarians
(Balanophyllia elegans)
SF: 85.71% | DEN: 3.33
Plumose Anemone - Cnidarians
(Metridium farcimen / senile)
SF: 85.71% | DEN: 3.67
Yellowtail Rockfish - Scorpionfish
(Sebastes flavidus)
SF: 85.71% | DEN: 3.5
Bull Kelp - Algae
(Nereocystis luetkeana)
SF: 71.43% | DEN: 3
Giant Barnacle - Arthropods
(Balanus nubilus)
SF: 71.43% | DEN: 3.4
Leather Star - Echinoderms
(Dermasterias imbricata)
SF: 71.43% | DEN: 1.4
Rock Scallop - Mollusks
(Crassadoma gigantea)
SF: 71.43% | DEN: 1.8
Yellow Margin Dorid Complex - Mollusks
(Cadlina luteomarginata/sylviaearleae/klasmalmbergi/jannanicholsae/Acanthodoris hudsoni)
SF: 71.43% | DEN: 1.4
Longfin Gunnel - Gunnel
(Pholis clemensi)
SF: 57.14% | DEN: 2
Orange Sea Cucumber - Echinoderms
(Cucumaria miniata)
SF: 57.14% | DEN: 3
Shiny Orange Sea Squirt - Urochordates
(Cnemidocarpa finmarkiensis)
SF: 57.14% | DEN: 2
Glassy Sea Squirt - Urochordates
(Ascidia paratropa)
SF: 42.86% | DEN: 1.33
Green Sea Urchin - Echinoderms
(Strongylocentrotus droebachiensis)
SF: 42.86% | DEN: 2
Leafy Hornmouth - Mollusks
(Ceratostoma foliatum)
SF: 42.86% | DEN: 2
Longfin Sculpin - Sculpin
(Jordania zonope)
SF: 42.86% | DEN: 2.33
Opalescent Nudibranch - Mollusks
(Hermissenda crassicornis / opalescens)
SF: 42.86% | DEN: 1.33
Orange Social Ascidian - Urochordates
(Metandrocarpa taylori)
SF: 42.86% | DEN: 0.67
Scalyhead Sculpin - Sculpin
(Artedius harringtoni)
SF: 42.86% | DEN: 2
Wolf-eel - Wolffish
(Anarrhichthys ocellatus)
SF: 42.86% | DEN: 1.67
Cabezon - Sculpin
(Scorpaenichthys marmoratus)
SF: 28.57% | DEN: 1.5
Juvenile (YOY) Rockfish - Unidentified - Scorpionfish
(Sebastes sp. (YOY))
SF: 28.57% | DEN: 3
Manacled Sculpin - Sculpin
(Synchirus gilli)
SF: 28.57% | DEN: 1.5
Mosshead Warbonnet - Prickleback
(Chirolophis nugator)
SF: 28.57% | DEN: 1
Northern Kelp Crab - Arthropods
(Pugettia producta)
SF: 28.57% | DEN: 2
Orange Zoanthid - Cnidarians
(Epizoanthus scotinus)
SF: 28.57% | DEN: 1
Oregon Triton - Mollusks
(Fusitriton oregonensis)
SF: 28.57% | DEN: 1.5
Painted Greenling - Greenling
(Oxylebius pictus)
SF: 28.57% | DEN: 1.5
Puget Sound King Crab - Arthropods
(Echidnocerus cibarius)
SF: 28.57% | DEN: 1
San Diego Dorid / Leopard Dorid - Mollusks
(Diaulula sandiegensis / odonoghuei)
SF: 28.57% | DEN: 2
Sunflower Star - Echinoderms
(Pycnopodia helianthoides)
SF: 28.57% | DEN: 2.5
White-lined Dirona - Mollusks
(Dirona albolineata)
SF: 28.57% | DEN: 2
Yellow Boring Sponge - Poriferans
(Cliona californiana)
SF: 28.57% | DEN: 1
Yelloweye Rockfish - Scorpionfish
(Sebastes ruberrimus)
SF: 28.57% | DEN: 2
Brown Rockfish - Scorpionfish
(Sebastes auriculatus)
SF: 14.29% | DEN: 2
Buffalo Sculpin - Sculpin
(Enophrys bison)
SF: 14.29% | DEN: 2
Clown Dorid - Mollusks
(Triopha modesta / Triopha catalinae)
SF: 14.29% | DEN: 1
Decorated Warbonnet - Prickleback
(Chirolophis decoratus)
SF: 14.29% | DEN: 2
Fish-eating Anemone - Cnidarians
(Urticina piscivora)
SF: 14.29% | DEN: 2
Lacy Bryozoan - Bryozoans
(Phidolopora pacifica)
SF: 14.29% | DEN: 1
Pink Hydrocoral - Cnidarians
(Stylaster venustus / verrillii)
SF: 14.29% | DEN: 2
Red Irish Lord - Sculpin
(Hemilepidotus hemilepidotus)
SF: 14.29% | DEN: 2
Red Rock Crab - Arthropods
(Cancer productus)
SF: 14.29% | DEN: 1
Southern Rock Sole - Righteye Flounder
(Lepidopsetta bilineata)
SF: 14.29% | DEN: 1
Spiny Pink Star - Echinoderms
(Pisaster brevispinus)
SF: 14.29% | DEN: 2
Striped Seaperch - Surfperch
(Embiotoca lateralis)
SF: 14.29% | DEN: 2
Tiger Rockfish - Scorpionfish
(Sebastes nigrocinctus)
SF: 14.29% | DEN: 1
Unidentified Sculpin - Sculpin
(Cottidae spp.)
SF: 14.29% | DEN: 2
White-spotted Anemone - Cnidarians
(Urticina sp.)
SF: 14.29% | DEN: 1