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Phylum Mollusca > Class Cephalopoda > Family Octopodidae
Slender seagrass octopus
awaiting identification*
Family Octopodidae
updated May 2020

Where seen? This small octopus with very long arms is sometimes seen on our Northern shores among seagrasses. Usually purplish. Maroon ones with tiny white spots are sometimes seen.

Features: Head about 2-3cm long, arms may be 10-12cm long. Some are hardly bigger than a seagrass blade! The head is tapering, relatively smooth sometimes with tiny bumps. Arms slender tapering, webbing not very extensive. Generally shades of purple. Included in this fact sheet are maroon ones. This octopus hasn't been seen to change the skin texture into large bumps or spines.

Changi, Jul 07

Hardly bigger than a seagrass leaf.
Changi, Oct 07
What does it eat? One was seen trying to drag a crab into its burrow.

Changi, May 09
Trying to drag a crab into its lair.

Changi, Jul 07
A mating pair?

Changi, Aug 13
Maroon one with tiny white spots.

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

Slender seagrass octopuses on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores


Pasir Ris Park, Aug 08
Photo shared by Loh Kok Sheng on his blog.

Changi, Jun 20
Photo shared by Loh Kok Sheng on facebook.

Changi, May 09
Photo shared by Law Ing Sing on facebook.


Changi Creek, May 21
Photo shared by Marcus Ng on facebook.


Pasir Ris Park, Sep 20
Photo shared by Loh Kok Sheng on facebook.

Pasir Ris Park, Jul 17
Photo shared by Abel Yeo on facebook.


Pulau Ubin OBS, Jan 16
Photo shared by Jonathan Tan on facebook.

Pulau Ubin OBS, Jan 16
Photo shared by Jonathan Tan on facebook.

Chek Jawa, Nov 08
Photo shared by Loh Kok Sheng on flickr.


East Coast Park, Aug 20
Photo shared by Vincent Choo on facebook.
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