crabs

A short PBS Eons episode on carcinization, the repeated independent evolution of crab-like bodies in unrelated crustaceans, and what makes that form so successful.

Rob Pike gives an insider's account of the history of Unix and the development of key pieces of modern computing, including Bell Labs anecdotes.

A BBC Earth clip from The Hunt showing an octopus species from northern Australia that leaves the water at low tide to hunt crabs on land.