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Out of context: Reply #53445
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http://en.wikipedia.org/wiki/Sex…
An extreme example of sexual dimorphism is found in the
genus Osedax of polychaete worms, which lives on whale
falls. The females feed on the bones of the dead whale;
the males live inside the females and do not develop past
their larval stage, except to produce large amounts of
sperm. In the echiuran Bonellia viridis, exposure to adult
females causes larvae to develop into tiny, semi-parasitic
males which are swallowed and live inside the female's
genital sac.Live inside the female's genital sac
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