Here are some of the cephalopod species we have documented and identified so far on the island, with some interesting information to wet your wildlife appetite. If you click on the picture you can learn more about them and why they are important to the islands ecosystem and us.


Family: Sepiidae

Broadclub cuttlefish (Sepia latimanus) IUCN REDLIST: Data Deficient

Broad club cuttle fish (Sepia Latimanus) (2)
Picture taken by Aaron Perchais (The Diveshop)

 

The most common species of cuttlefish which is associated with coral reefs and the second largest in size. These majestic creatures exhibit some beautiful colour changes which reflects their emotional status; stressed, courting etc. They feed on prawns and shrimp from a certain genus ‘Palaemon’, using the same colour changing displays they mes,erize their prey with rhythmic colour changes then strike.


Pharaoh cuttlefish (sepia pharaonis) IUCN REDLIST: Data Deficient

Cuttlefishes
Picture taken by Dennis Funke (The Diveshop)

This species is native to the Indian ocean but not the pacific so their presence indicates their is a pathway connecting the two oceans which can facilitate the movement of species. They inhabit depths of up to 130m but at night when they feed they move to shallower waters in search of; small fish, crabs and occasionally the odd cuttlefish. A regular delicacy and still heavily commercially fished, cuttlefish are an important food source in many countries ad their ink (sepia) used to be used for dyes. However it is now synthesized these days.


Family: Octopodidae

Coconut octopus (Amphioctopus marginatus) IUCN REDLIST: Not evaluated

DCIM105GOPRO
Picture taken by Christopher Jones (The Diveshop)

This fascinating creature is seasonally found around the island hiding inside clam shells or under sand with just their eyes poking out. It commonly preys on shrimp, crabs, clams and displays unusual behaviour including bipedal walking (try to imitate to floating coconut – hense their name) and tool use. This species is of only two octopus species known to display bipedal behaviour.


Family: Loliginidae

Bigfin Reef squid (Sepioteuthis lessoniana) IUCN REDLIST: Not evaluated

Squid found on Coral Divesite
Picture taken by Dennis Funke (The Diveshop)

This family is also an important food source and staple diet in many countries. They have the fastest growth record of any large marine invertebrate however their lifespan is short. They don’t even survive a year, amazingly bigfin reef squid are regarded as one of the most promising species for mariculture (marine species farming) due to their short lifespan. They feed on crustaceans and small fish and are a food source for resident tuna, other predatory fish and humans too.



***Identification of these species has been made through, photographic documentation cross referenced with external specialists and identification books. Any errors in our database will be rectified upon notification, if you feel that we have misidentified any species please help us to improve our research through our contact us page. All people involved will be acknowledge in the website and reports***



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