A new investigation into the tangled sex lives of deep-sea squid has uncovered a range of bizarre mating techniques. The cephalopods' intimate encounters include cutting holes into their partners for sex, swapping genders, and deploying flesh-burrowing sperm. These and other previously unknown reproductive strategies were documented in a survey of ten squid species living worldwide at depths of between 984 and 3,937 feet (300 and 1,200 meters). Study leader Henk-Jan Hoving, a Ph.D. student at the University of Groningen in the Netherlands, examined squid caught during research voyages as well as preserved museum specimens.
Of course, you can find many more examples of Weird Cephalopod Sex on Pharyngula....
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