"We wanted an octopus-friendly toy which had a compartment to hide food in," said the aquarium's Matt Slater.
He says Louis gets very excited when sees the toy, which he plays with for an hour at a time.
"Its bright colours, strange shape and moveable parts make it fascinating for Louis," said Mr Slater.
The giant Pacific octopus is the largest octopus species, with a world record length of 33 feet. Young Louis is about six feet long, stretched out. Link -via Reddit