Male O. ingens with erect penis and ejaculated spermatophores on table (penis is white tubular structure in lower half of the picture)
The mating habits of deep-sea squid have been revealed for the first time, after the discovery of a male squid with a huge elongated and erect penis.
The male squid's sexual organ is almost as long as its whole body, including the squid's mantle, head and arms.
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