Cephalopod size the original tissue samples—together with those of other similar carcasses—showed conclusively that they were all masses of the collagenous matrix of whale blubber (Pierce "et al.", 1995; 2004). Cephalopods of enormous size have featured prominently in fiction (see Garcin & Raynal, 2011; Barrère, 2017). Some of the best known examples include the giant squid from Jules Verne's 1870 novel "Twenty Thousand Leagues Under the Sea" and its various film adaptations; the giant octopus from the 1955 monster movie "It Came from Beneath the Sea"; and the giant squid from Peter Benchley's 1991 novel "Beast" and the TV film adaptation of
Twenty Thousand Leagues Under the Sea of underwater breathing apparatus designed by Benoit Rouquayrol and Auguste Denayrouze in 1865. They designed a diving set with a backpack spherical air tank that supplied air through the first known demand regulator. The diver still walked on the seabed and did not swim. This set was called an "aérophore" (Greek for "air-carrier"). Air pressure tanks made with the technology of the time could only hold 30 atmospheres, and the diver had to be surface supplied; the tank was for bailout. The durations of 6 to 8 hours on a tankful without external supply recorded for the Rouquayrol set in