Octopuses fight on the sea floor

Octopuses, long seen as largely solitary creatures, may have more complex social interactions than previously believed, say Australian and US searchers.

Octopuses that stand tall, turn dark and spread their web are likely showing aggression, while those who have lost a fight or who are trying to avoid conflict may display a pale colour.

Read more: Fighting octopuses 'change colour to signal intent'

Footage courtesy of Peter Godfrey-Smith, David Scheel, Matt Lawrence and Stefan Linquist.