Octopuses are reclusive animals, and the gloomy octopus (Octopus tetricus) is no exception. During the day, it retreats into its den in the rocky reefs of Australia, which it often blocks with rocks. It comes out most often at night, to catch lobsters, crabs, and other creatures with its meter-long arms. But in 2012, researchers reported that the species is surprisingly social. Diving in Jervis Bay, Australia, the scientists documented as many as 16 gloomy octopuses all living in a large pile of discarded shells—dubbed Octopolis—mating and fighting, even during the daytime.
Scientists have discovered an “underwater city full of gloomy octopuses” off the coast of Australia. Whenever I expire, please incinerate me and throw my ashes into Jervis Bay, where the octopuses are so busy being gloomily social that they barely notice the wobbegong sharks!