Octopus's Garden in the making...

This Octopus [ Octopus tetricus ] dragged the Triton towards his hole until it disappeared ,no doubt that the triton will be part of the octopus's garden now. There were several 'gardens' in the area ,some were tidier than others and one octopus was sharing with a large 11 armed Seastar [ Coscinasterias muricata ]or was it not a friendly  arrangement ?