Dumbo Octopuses live a that bottom of the sea so actually being on the seafloor while others just hover over it. They can live any from 9800 ft below sea level to 13000 ft below sea level.
There is no specific mating season for the dumbo octopus and they can have a lot of babies at one time. They only have one mate and after mating the male dies. The female watches over the eggs and once the eggs hatch she dies and the cycle begins again