Octopus are part of the cephalapod family. They are quite special in the way that they reproduce.  Male octopus have what's called a hectocotylus which is one of his arms that is modified to be able to store and then release spermatophores (octopus swimmers) which go on to fertilise the female's eggs. Males generally form a new hectocotylus in each new season.

Posted on September 7, 2015 .