Depending on your preferences, you might consider this video somewhat disturbing and possibly NSFW. There’s no doubt what the seal is trying to do to the penguin!
BBC Earth explains what biologists make of the horny seals going cross-species:
Things are heating up in the cold climes of the sub-Antarctic. On a remote, and mostly desolate island, seals have been caught engaging in an extreme form of sexual behaviour.
Specifically, they have been trying to have sex with penguins.
More than one fur seal has been caught in the act, on more than one occasion.
And it’s all been captured on film, with details being published in the journal Polar Biology.
The sexual behaviour of the fur seals hasn’t come as a complete shock to the scientists that recorded it.
In 2006, they saw, for the first time, a fur seal attempting to copulate with a king penguin, on Marion Island, a sub-Antarctic island that is home to both species.
They published details of that incident, and speculated that the sex act at the time may have been the behavior of a frustrated, sexually inexperienced seal. Or an aggressive, predatory act. Or a playful one that turned sexual…
[continues at BBC Earth]