By species www.diverosa.com Rokus Groeneveld & Sanne Reijs  
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Cephalopods are the highest developed member of the mollusks; related to, for example, shells and nudibranch. The name Cephalopods comes from the Greek and means head / foot. The main members are octopus, squid and cuttlefish, but also the seldom seen nautilus and argonauts are part of it. There are over 800 different species, all marine; there are no fresh water species.

Cephalopods are often hard to determinate, also because most Cephalopods posses the ability to change color. They do that by their Chromatophores, pigment-containing and light-reflecting cells, also found in amphibians, fish, reptiles, crustaceans. Sometimes the flash of a strobe makes them change color instantly. Next to that, a lot of Cephalopods, especially squid and cuttlefish, also use bioluminescence produced by bacterial symbionts.
IL3-096 Two-tone pygmy squid, Idiosepius pygmaeus

Idiosepius pygmaeus

Two-tone pygmy squid

Lembeh, Indonesia 2008
Dive site: Teluk kembahu II (night dive)

 IAM-043 Two-tone pygmy squid, Idiosepius pygmaeus, with shrimp

Idiosepius pygmaeus

Two-tone pygmy squid

Ambon, Indonesia 2010
house reef Maluku divers (night dive)

 IMB-216_Idiosepius_paradoxus_Northern_pygmy_squid

Idiosepius pygmaeus

Northern pygmy squid

Manado Bay, Indonesia 2022
Dive site: Circus critter 1 (night dive)

 FNE-024 undetermined pygmy squid, Idiosepius sp. 1

Idiosepius sp.

undetermined pygmy squid

Negros, Philippines 2012
Dive site: house reef Atlantis (night dive)

 FNE-234 undetermined pygmy squid, Idiosepius sp.

Idiosepius sp.

undetermined pygmy squid

Negros, Philippines 2012
Dive site: San Miguel (night dive)

FNE-235 undetermined pygmy squid, Idiosepius sp.

Idiosepius sp.

undetermined pygmy squid

Negros, Philippines 2012
Dive site: San Miguel (night dive)

 FM2-039 undetermined pygmy squid, Idiosepius sp.

Idiosepius sp.

undetermined pygmy squid

Cebu, Philippines 2012
house reef Magic Island (night dive)

 IL5-058 undetermined pygmy squid, Idiosepius sp.

Idiosepius sp.

undetermined pygmy squid

Lembeh, Indonesia 2014
Dive site: Madidir (night dive)

 IRA-308 undetermined pygmy squid, Idiosepius sp. with shrimp

Idiosepius sp.

undetermined pygmy squid

Indonesia, Raja ampat 2014
Dive site: Nudibranch rock

 FRO-448_Idiosepius_sp_undetermined_pymy_squid

Idiosepius sp.

undetermined pygmy squid

Romblon, the Philippines 2017
Dive site: Agnay desert (night dive)

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back to Flora and Fauna pages 		AVI-057_Sepioteuthis_australis_Southern_reef_squid_1

Sepioteuthis australis

Southern reef squid

Australia, Victoria 2018
Dive site: Blairgowrie pier (night dive)

 AVI-183_Sepioteuthis_australis_Southern_reef_squid_2

Sepioteuthis australis

Southern reef squid

Australia, Victoria 2018
Dive site: Blairgowrie pier (night dive)

 ASA-239_Sepioteuthis_australis_Southern_reef_squid

Sepioteuthis australis

Southern reef squid

South Australia 2018
Dive site: Rapid bay jetty

 AWA-091_Sepioteuthis_australis_Southern_calamary

Sepioteuthis australis 1

Southern reef squid

Western Australia 2020
Dive site: Canal rocks (night dive)

AWA-384_Sepioteuthis_australis_Southern_calamary_2

Sepioteuthis australis 2

Southern reef squid

Western Australia 2020
Dive site: Canal rocks (night dive)

  IL1-23 Bigfin reef squid

Sepioteuthis lessoniana

Bigfin reef squid

Lembeh, Indonesia 2002
Dive site: Batu putih (night dive)

 FCA-08 Bigfin reef squid

Sepioteuthis lessoniana

Bigfin reef squid

Cabilao, Philippines 2005
Dive site: Lighthouse (night dive)

 FMI-079 Bigfin reef squid 1

Sepioteuthis lessoniana

Bigfin reef squid

Cebu, Philippines 2007
Dive site: Pescador south (night dive)

FMI-078 Bigfin reef squid 2

Sepioteuthis lessoniana

Bigfin reef squid

Cebu, Philippines 2007
Dive site: Pescador south (night dive)

 IL3-156 Bigfin reef squid, Sepioteuthis lessoniana

Sepioteuthis lessoniana

Bigfin reef squid

Lembeh, Indonesia 2008
Dive site: Air prang (night dive)

 IL3-157 Bigfin reef squid, Sepioteuthis lessoniana

Sepioteuthis lessoniana

Bigfin reef squid

Lembeh, Indonesia 2008
Dive site: Aw shucks

 IL3-158 Bigfin reef squid, Sepioteuthis lessoniana

Sepioteuthis lessoniana

Bigfin reef squid

Lembeh, Indonesia 2008
Dive site: Air prang (night dive)

 IL3-140 Bigfin reef squid, Sepioteuthis lessoniana

Sepioteuthis lessoniana

Bigfin reef squid

Lembeh, Indonesia 2008
Dive site: Air prang (night dive)

IAM-047 Bigfin reef squid, Sepioteuthis lessoniana 1

Sepioteuthis lessoniana

Bigfin reef squid 1

Ambon, Indonesia 2010
house reef Maluku divers (night dive)

 IAM-048 Bigfin reef squid, Sepioteuthis lessoniana 2

Sepioteuthis lessoniana

Bigfin reef squid 2

Ambon, Indonesia 2010
house reef Maluku divers (night dive)

 IAM-271 Bigfin reef squid, Sepioteuthis lessoniana 3

Sepioteuthis lessoniana

Bigfin reef squid

Ambon, Indonesia 2010
house reef Maluku divers (night dive)

 IL4-077 Bigfin reef squid, Sepioteuthis lessoniana

Sepiotheutis lessoniana

Bigfin reef squid

Lembeh, Indonesia 2010
Dive site: Jahir (night dive)

 IL4-072 Bigfin reef squid, Sepioteuthis lessoniana

Sepioteuthis lessoniana

Bigfin reef squid

Lembeh, Indonesia 2010
Dive site: Jahir (night dive)

IB2-008 Bigfin reef squid, Sepioteuthis lessoniana 1

Sepioteuthis lessoniana

Bigfin reef squid 1

Bali, Indonesia 2011
Dive site: Seraya

 IB2-009 Bigfin reef squid, Sepioteuthis lessoniana 2

Sepiotheutis lessoniana

Bigfin reef squid 2

Bali, Indonesia 2011
Dive site: Seraya

 IB2-014 Bigfin reef squid, Sepioteuthis lessoniana 3

Sepiotheutis lessoniana

Bigfin reef squid 1

Bali, Indonesia 2011
house reef Kubu Indah (night dive)

 IB2-150 Bigfin reef squid, Sepioteuthis lessoniana

Sepioteuthis lessoniana

Bigfin reef squid 2

Bali, Indonesia 2011
house reef Kubu Indah (night dive)

 IL5-036 Bigfin reef squid, Sepioteuthis lessoniana

Sepiotheutis lessoniana

Bigfin reef squid

Lembeh, Indonesia 2014
Dive site: Horse shoe (night dive)

IH2-119 Bigfin reef squid, Sepioteuthis lessoniana 1

Sepioteuthis lessoniana

Bigfin reef squid

Halmahera, Indonesia 2014
Dive site: Airstrip (night dive)

 IH2-120 Bigfin reef squid, Sepioteuthis lessoniana 2

Sepioteuthis lessoniana

Bigfin reef squid

Halmahera, Indonesia 2014
Dive site: Airstrip (night dive)

 FAN-019 Sepioteuthis lessoniana, Bigfin reef squid

Sepioteuthis lessoniana

Bigfin reef squid

Anilao, the Philippines 2015
Dive site: Koala (night dive)

 IMI-025_juvenile_Sepioteuthis_lessoniana_Bigfin_reef_squid

Sepioteuthis lessoniana

Bigfin reef squid

Bangka, Indonesia 2017
house reef Mimpi Indah (night dive)

 IMI-082_Sepioteuthis_lessoniana_Bigfin_reef_squids

Sepioteuthis lessoniana

Bigfin reef squids

Bangka, Indonesia 2017
house reef Mimpi Indah (night dive)

FN2-090_Sepioteuthis_lessoniana_Bigfin_reef_squid_1

Sepioteuthis lessoniana

Bigfin reef squid

Negros, the Philippines 2019
Dive site: San miguel (night dive)

 FN2-368_Sepioteuthis_lessoniana_Bigfin_reef_squid_2

Sepioteuthis lessoniana

Bigfin reef squid

Negros, the Philippines 2019
Dive site: San miguel (night dive)

 FN2-369_Sepioteuthis_lessoniana_Bigfin_reef_squid_3

Sepioteuthis lessoniana

Bigfin reef squid

Negros, the Philippines 2019
Dive site: San miguel (night dive)

 IL6-217_Sepioteuthis_lessoniana_eggs

Sepioteuthis lessoniana eggs

Bigfin reef squid

Lembeh, Indonesia 2022
Dive site: Critter hunt

 
BON-139 Caribbean reef squid, Sepioteuthis sepioidea 2

Sepioteuthis sepioidea

Caribbean reef squid 1

Caribbean, Bonaire 2013
Dive site: Salt city

 BON-038 Caribbean reef squid, Sepioteuthis sepioidea

Sepioteuthis sepioidea

Caribbean reef squid 2

Caribbean, Bonaire 2013
Dive site: Salt city

 /BON-140 Caribbean reef squid, Sepioteuthis sepioidea 3

Sepioteuthis sepioidea

Caribbean reef squid 3

Caribbean, Bonaire 2013
Dive site: Salt city

 BO2-056_Sepioteuthis_sepioidea_Caribbean_reef_squid

Sepioteuthis sepioidea

Caribbean reef squid

Caribbean, Bonaire 2021
Dive site: (south of) Invisibles

 BO2-369_Sepioteuthis_sepioidea_Caribbean_reef_squid

Sepioteuthis sepioidea

Caribbean reef squid

Caribbean, Bonaire 2021
Dive site: Angel city

AWA-088_probably_Xipholeptos_notoides_Southern_pygmy_squid

probably Xipholeptos notoides

Southern pygmy squid

Western Australia 2020
Dive site: Canal rocks (night dive)

  IRA-189 undetermined flying squid, family ommastrephidae

family ommastrephidae

undetermined flying squid

Indonesia, Raja ampat 2014
Dive site: house reef Kri eco (night dive)

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