40 seals in one night? I read the article and it did not mention how big these seals are but it is likely much more than the entire pride (9?) could eat before the seals rot away.

Sea Lions!

How do we know that Sea Lions aren't hunting Desert Lions?

'Their resilience is a lesson to us all': The maritime lions hunting seals on the beach

What, a lesson to humans? To be able to go anywhere and eat anything? We're the global champions at that.

https://en.wikipedia.org/wiki/Human

Humans are omnivorous, capable of consuming a wide variety of plant and animal material, and have used fire and other forms of heat to prepare and cook food since the time of Homo erectus.

They are apex predators, being rarely preyed upon by other species.

By using advanced tools and clothing, humans have been able to extend their tolerance to a wide variety of temperatures, humidities, and altitudes.[131][138] As a result, humans are a cosmopolitan species found in almost all regions of the world, including tropical rainforest, arid desert, extremely cold arctic regions, and heavily polluted cities; in comparison, most other species are confined to a few geographical areas by their limited adaptability.

The combined biomass of the carbon of all the humans on Earth in 2018 was estimated at 60 million tons, about 10 times larger than that of all non-domesticated mammals.

I feel like they are hunting seals because they can't hunt other animals because the population of other animals is too low.