An Australian diver witnessed “something incredible” when she encountered a southern blue-ringed octopus camouflaging itself in shells, a process she had never seen in action before. Jules Casey, who ...

A video of divers persuading a coconut octopus to trade a dangerous plastic cup for a shell has resurfaced online, drawing over 20 million views. Filmed off Lembeh, Indonesia, in 2018, the rescue ...