Food chain – Fact Or Fiction?

Zooplankton consumed by shrimp and shrimp by small fish,
Together with a stirfry, they might make a pretty solid dish.
Fish consumed by seals and seals by sharks,
The attack down and under does not leave any marks.
Whether air, ocean or water,
Lives are lost and consumed daily in vain.
There is hardly anyone breathing,
On top of the food chain.