While there are several reports of cannibalism in octopus, we certainly don't see it very often. Yesterday I introduced a small male into the aquarium of a larger female Abdopus aculeatus expecting them to mate. He never had a chance. As soon as I released the male, the female jetted across the tank and totally enveloped him in her web. I immediately tried to break it up, but short of injuring her, there was nothing I could do. A couple of hours later she dropped his remains having eaten most of the arms.
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