It is unknown how female squid mobilise sperm from
implanted spermatangia, but if O. sicula spawn eggs
through the funnel, the ventrally located spermatangia may
be best situated during fertilisation. For fertilisation of the
eggs, the spermatozoa may exit through the aboral tubular
trailing end of the implanted spermatangia, which opens to
the exterior. Or the female may peel open the rugose gelatinous
tissue with their hooked arms, which would expose
spermatozoa from the spermatangia to the spawned eggs.
If the latter is true, spent females would show considerable
damage to their ventral mantles. However, spent female O.
sicula remain undescribed