Coconut octopus (Amphioctopus marginatus) Date taken:
January 17, 2016 at 6:44pm Dive site:
Jahir 1, Lembeh Strait, Indonesia
I've written about these guys before; it's a must to give them a shell and see if they "like" it and try to run away with it (and keep it for protection). So fun to play with; these guys are one of my favorites to find for sure!
My iNaturalist observation: 5049332
For more info:
* Cognitive sophistication - Defensive tool use in a coconut-carrying octopus
* Wikipedia: Amphioctopus_marginatus