The male argonaut is a dwarf, about 10% of the length of the female. The entire third right arm is hectocotylized and carried in a special sac. At mating, the hectocotylus, which carries one large spermatophore, breaks out of its sac and free from the male body. It then invades or is deposited in the female's mantle cavity, where it remains viable and active for some time. Females brood many thousands of very small eggs deposited in an external shell-like egg case.
CONSERVATION STATUS Not listed by the IUCN.
I Argonauta argo I Stoloteuthis leucoptera
Was this article helpful?