Cthulhu 56 | Cthulhu’s head is depicted as similar to the entirety of a giant octopus, with an unknown number of tentacles surrounding its supposed mouth. Cthulhu is described as being able to change the shape of its body at will, extending and retracting limbs and tentacles as it sees fit.[citation needed] Cthulhu is also described as undying. In “The Call of Cthulhu”, the sailor Johansen attempted to kill it by ramming it with his ship, the Alert, only to have it turn into a green mist and reassemble.