Mankind was supposed to have been given permission to eat animals after the flood of Noah`s day , by GOD ,presumably because it would take some time for the earth to sprout enough vegetation for the Arks inhabitants.
So what about marine life ,? how was that affected by the flood .? The sea is full of flesh eating marine life that has apparently been going on for centuries before the flood , since creation.
The flood upon the earth would have had very little impact on the food source available under the sea for marine life.
Yet all sea life/ creatures live off the life of other sea creatures / life , just as land animals did , and that has always been the case.
Before , and after , the Noachian flood
smiddy