The “head” of an octopus is actually its body—a bellows-like sac called the mantle, which houses its organs. To breathe, the octopus opens its mantle wide and expels water over the gills and out a muscular siphon.
The “head” of an octopus is actually its body—a bellows-like sac called the mantle, which houses its organs. To breathe, the octopus opens its mantle wide and expels water over the gills and out a muscular siphon.