Friday Squid Blogging: Squid Sex Organs
Riddles of squid sex:
All cephalopods are hindered by their body shape, which comprises a closed hood-type structure called a mantle, which forms most of what appear to be a cephalopod’s body and head.
The animals use this mantle to move via jet propulsion, they must ventilate it to breathe, and they must also hide their excretory and sexual organs within its structure.
That poses a challenge to male cephalopods: how do they get their sperm past this mantle, and how does the sperm stay there when water is being forcibly passed through the mantle cavity so females can move and breathe?