All it took was for someone at the New Zealand National Aquarium to leave a tiny gap in Inky’s tank. When everyone went home for the night, he quietly slid out and lowered himself down the outside of the tank. Suction cup marks indicate that he crossed the floor to a drain, squeezed into it and emerged 150 feet later onto an outside deck. From there it was a simple climb down into the open waters of Hawkes Bay on the east coast of New Zealand’s North Island.

Read more: The Great Octopus Escape – and Others!