Why do whales eat a huge amount of small fishes instead of a few large ones?

Question

I remember watching a documentary once and learned that whales need to eat tonnes (literally) of krill per day to survive. I don’t understand why this is better than eating small amounts of large fishes instead.

In: 298

Answer 1

The type of whales you are talking about are filter feeders rather than hunters, they take in about their own mass in water in a single “gulp” and then push the water out through a filter and catch millions of krill against the filter and then eat them, It works and is really efficient and don’t have to chase shoals of fish to find enough to eat.