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Phylum Mollusca > Class Cephalopoda > Family Octopodidae
Big-head seagrass octopus
awaiting identification*
Family Octopodidae
updated Oct 2016

Where seen? This octopus with a large smooth head is sometimes seen on Changi, among seagrasses. Sometimes tiny ones hardly bigger than a seagrass leaf can be seen.

Features: Head about 6-8cm long, arms may be 12-20cm long. The head is smooth and oval, and relatively large compared to the arms. Arms tapering, webbing not very extensive. This octopus hasn't been seen to change the skin texture into large bumps or spines. One was seen hiding inside a large shell of a dead Noble volute (Cymbiola nobilis).

Changi, Apr 05

'Walking' with its head above the ground.
Changi, May 09

Foraging among seaweeds.
Changi, Oct 07

Hiding in a dead Noble volute shell.
Changi, May 12


Changi, Jul 09

Carrying eggs?

*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of display.

Big-head seagrass octopuses on Singapore shores

Photos of Big-head seagrass octopuses for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map


Changi, May 15
Photo shares by Marcus Ng on facebook.


With eggs inside an empty shell.

Beting Bronok, Jun 14
Photo shares by Marcus Ng on facebook.

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