BBC News - Octopus snatches coconut and runs
http://news.bbc.co.uk/2/hi/science/nature/8408233.stm

Dr Mark Norman, head of science at Museum Victoria, Melbourne, and one of the authors of the paper, said: "It is amazing watching them excavate one of these shells. They probe their arms down to loosen the mud, then they rotate them out."

Tool use among octopuses