Veined octopus (Amphioctopus marginatus). It is trying to form a protective shelter from two pieces of a broken glass. - stock video

The Veined octopus is also known as the coconut octopus, as it is often found using two discarded coconut shells to hide in. Like hermit crabs with shells, it will actively investigate other items for protective potential. Here the octopus tries in vain to make two broken glass halves fit together. Filmed in the Lembeh Strait, Sulawesi, Indonesia