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Sea Slugs in W Arch, Miyakojima 83

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Boat dives from our own boat are the main format. Dive sites vary by season — we pick the environment that matches what you want to find.

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Best Time to Dive in W Arch

103
Total Observations
22.0°C - 31.0°C
Water Temperature Range
May , Jun , Jul
Peak Season
64
Peak Observations
Monthly Diving Activity & Water Temperature
Observations    Water Temperature    Higher bars indicate peak diving activity
Planning Your Dive Trip
  • Best for beginners: Peak Activity season (peak activity)
  • Water temperature: 22.0°C - 31.0°C range
  • Peak observations: 64 in Peak Activity
  • Year-round diving: 103 total observations recorded
Sort by Popularity Sort Taxonomically Sort Alphabetically
Cadlinella ornatissima

Cadlinella ornatissima

(Risbec, 1928)
Phyllidiidae sp. 1

Phyllidiidae sp. 1
Phestilla melanobrachia

Phestilla melanobrachia

Bergh, 1874
Ardeadoris cruenta

Ardeadoris cruenta

(Rudman, 1986)
Bornella anguilla

Bornella anguilla

S. Johnson, 1984
Mariaglaja mandroroa

Mariaglaja mandroroa

(Gosliner, 2011)
Sagaminopteron nigropunctatum

Sagaminopteron nigropunctatum

Carlson & Hoff, 1973
Halgerda sp. 2

Halgerda sp. 2
Ardeadoris egretta

Ardeadoris egretta

Rudman, 1984
Goniobranchus albonares

Goniobranchus albonares

(Rudman, 1990)
Glossodoris rufomarginata

Glossodoris rufomarginata

(Bergh, 1890)
Hypselodoris maculosa

Hypselodoris maculosa

(Pease, 1871)
Phyllidiopsis cardinalis

Phyllidiopsis cardinalis

Bergh, 1876
Janolus sp. 2

Janolus sp. 2
Eubranchus sp.11

Eubranchus sp.11
Crimora sp. 1

Crimora sp. 1
Tylodina sp. 1

Tylodina sp. 1
Chromodoris colemani

Chromodoris colemani

Rudman, 1982
Colpodaspis thompsoni

Colpodaspis thompsoni

G. H. Brown, 1979
Hermania orca

Hermania orca

(Gosliner, 1988)
Sagaminopteron psychedelicum

Sagaminopteron psychedelicum

Carlson & Hoff, 1974
Aplysia nigrocincta

Aplysia nigrocincta

E. von Martens, 1880
Elysia obtusa

Elysia obtusa

Baba, 1938
Placida kevinleei

Placida kevinleei

McCarthy, Krug & Á. Valdés, 2017
Hermaea noto

Hermaea noto

(Baba, 1959)
Nembrotha cristata

Nembrotha cristata

Bergh, 1877
Tyrannodoris luteolineata

Tyrannodoris luteolineata

(Baba, 1936)
Aegires exeches

Aegires exeches

Fahey & Gosliner, 2004
Aegires flores

Aegires flores

Fahey & Gosliner, 2004
Aegires villosus

Aegires villosus

Farran, 1905
Aldisa fragaria

Aldisa fragaria

Tibiriça, Pola & Cervera, 2017
Doriopsis pecten

Doriopsis pecten

(Collingwood, 1881)
Goniobranchus sp. 2

Goniobranchus sp. 2
Halgerda brunneomaculata

Halgerda brunneomaculata

Carlson & Hoff, 1993
Halgerda dalanghita

Halgerda dalanghita

Fahey & Gosliner, 1999
Halgerda diaphana

Halgerda diaphana

Fahey & Gosliner, 1999
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Halgerda willeyi

Halgerda willeyi

Eliot, 1904
Jorunna funebris

Jorunna funebris

(Kelaart, 1858)
Paradoris tsurugensis

Paradoris tsurugensis

Baba, 1986
Rostanga sp. 1

Rostanga sp. 1
Actinocyclus verrucosus

Actinocyclus verrucosus

Ehrenberg, 1831
Miamira moloch

Miamira moloch

(Rudman, 1988)
Chromodoris aspersa

Chromodoris aspersa

(A. A. Gould, 1852)
Goniobranchus geometricus

Goniobranchus geometricus

(Risbec, 1928)
Goniobranchus setoensis

Goniobranchus setoensis

(Baba, 1938)
Glossodoris cf. cincta

Glossodoris cf. cincta

(Bergh, 1888)
Hypselodoris whitei

Hypselodoris whitei

(A. Adams & Reeve, 1850)
Hypselodoris zephyra

Hypselodoris zephyra

Gosliner & R. F. Johnson, 1999
Diversidoris crocea

Diversidoris crocea

(Rudman, 1986)
Verconia norba

Verconia norba

(Er. Marcus & Ev. Marcus, 1970)
Thorunna halourga

Thorunna halourga

R. F. Johnson & Gosliner, 2001
Thorunna purpuropedis

Thorunna purpuropedis

Rudman & S. Johnson, 1985
Phyllidia scottjohnsoni

Phyllidia scottjohnsoni

Brunckhorst, 1993
Janolus incrustans

Janolus incrustans

Pola & Gosliner, 2019
Marianina rosea

Marianina rosea

(Pruvot-Fol, 1930)
Coryphellina delicata

Coryphellina delicata

(Gosliner & Willan, 1991)
Coryphellina exoptata

Coryphellina exoptata

(Gosliner & Willan, 1991)
Caloria indica

Caloria indica

(Bergh, 1896)
Cratena sp. 2

Cratena sp. 2
Godiva sp. 1

Godiva sp. 1
Phyllodesmium magnum

Phyllodesmium magnum

Rudman, 1991
Phyllodesmium poindimiei

Phyllodesmium poindimiei

(Risbec, 1928)
Tenellia diversicolor

Tenellia diversicolor

(Baba, 1975)
Abronica purpureoanulata

Abronica purpureoanulata

(Baba, 1961)
Tenellia sp.11

Tenellia sp.11
Pteraeolidia semperi

Pteraeolidia semperi

(Bergh, 1870)
Hypselodoris lacuna

Hypselodoris lacuna

Gosliner & R. F. Johnson, 2018
Aeolidina spp.

Aeolidina spp.
Anteaeolidiella takanosimensis

Anteaeolidiella takanosimensis

(Baba, 1930)
Tenellia sp.25

Tenellia sp.25
Eubranchus sp.10

Eubranchus sp.10
Glossodoris sp. 4

Glossodoris sp. 4
Goniodorididae sp. 3

Goniodorididae sp. 3
Chromodorididae spp.

Chromodorididae spp.
Costasiella vegae

Costasiella vegae

M. Ichikawa, 1993
Ercolania sp. 4

Ercolania sp. 4
Costasiella sp. 6

Costasiella sp. 6
Eubranchus sp.28

Eubranchus sp.28
Eubranchus sp.32

Eubranchus sp.32
Bulloidea spp.

Bulloidea spp.
Goniobranchus cf. variatus

Goniobranchus cf. variatus

(Risbec, 1928)
Hypselodoris sp.21

Hypselodoris sp.21
Hypselodoris sp.24

Hypselodoris sp.24
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