I got 2.7k on a post, but I just got lucky.

It’s not just a fat or muscle thing. Those both contribute of course; fat insulates and muscle produces more heat. But the real player is the surface area to volume ratio.

A bigger person has a lot more volume than they have a bigger surface area, and since heat is lost through the skin this has a major impact.

How closely do these sea lions and the local population interact? Are they a problem in any way? Or rather, are the humans there infringing on them in a negative way?