The giant squid is widespread, inhabiting all the world's oceans, with maximum usual sizes of around 12–13 m (39–43 ft) in length, though there are unattested reports of larger ones (i.e. 20 m/66ft). A giant squid was filmed in Toyama Bay which, after its noteworthy visit, swam back to the deep.

11 Giant Squid Facts - Fact Animal

Giant squid: from the deep sea to display | Natural History Museum