'We knew that he was bored as the aquarium is closed for winter, and at two
feet, seven inches Otto had discovered he was big enough to swing onto the edge
of his tank and shoot out a the 2000 Watt spot light above him with a carefully
directed jet of water.'
What other trouble can a bored octopus cause?
'Once we saw him juggling the hermit crabs in his tank, another time he
threw stones against the glass damaging it. And from time to time he completely
re-arranges his tank to make it suit his own taste better - much to the distress
of his fellow tank inhabitants.'