My favorite video ever of a leopard seal is this one.
Everything about is wonderful: the dude saying they are going to touch a sea lion. The reveal that it is definitely Not A Sea Lion. The nine foot long predator tired of their shit. The resonating thumping threat noises. The feinting jabs as the one dude is demanding they run. The bolting at the end when the camera man finally realizes the danger.
It's so neat that this exists, despite the fact that it is highly irresponsible and both men are potentially putting themselves and the animal in danger. I think this is Owha, a seal that is known for hanging around on docks in NZ and who seems quite acclimated to people though she still should never ever be approached like this. But the video is great to me in an atmospheric sense as an almost horror short to someone who has no idea what a leopard seal is and as the warning noises begin, that reveal of a massive unknown predator animal with jaws that could easily fit a head between them is just *chef's kiss*.
Origin: Open waters of tropical oceans and is rarely found in water below 70 °F / 21 °C
Diet: Krill, jellyfish and crab larvae, which are strained from the water through their gills by gill rakers
Behavior: Despite they're size they're very gentle and safe to be around! They swim slowly, no faster than 5 kph and are solitary, only coming together occasionally during plankton blooms or mass coral spawnings. Not much is known about how they communicate, but researchers think they do so through vibrations since sharks have very good hearing especially at lower frequencies.
Offspring: Whale shark eggs hatch while inside their mother. A mother shark will give birth to about 300 pups.