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
Because its convenient.
The biggest factor for carnivores when it comes to their choice of prey is how likely they are to be injured. Even a small injury can easily become infected and debilitating. A hunter which cannot hunt will starve.
A whale could probably *take a shark in a fight*, but why? The risk is simply not worth it when you can just be an animate water filter.
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