How come whales filter feed and eat small zooplankton despite their enormous body size?

Question

It just seems logically, bigger animals would eat bigger preys to meet their high energy/caloric needs. So why do whales, the largest animal in the world, eat such small animals (zooplankton)? Such a weird contrast. What is the biological reason for this?

In: Biology

Answer 1

Almost every single giant animal eats plants. Plants that float into your mouth for you is even easier than what elephants eat