Yes - one of the biggest reasons that sea mammal blubber consumption is so desirable is the caloric content.too lean maybe?
I made authentic Pemmican once using Moose jerky, spices & Moose fat. Looked exactly like a slightly greasy brownie, boy what a surprise for the taste buds (Your eyes say chocolate brownie but your tongue says WTF is this?) - but talk about fuel for the body when it was below -50 deg.