There are plenty of sea-creatures under two inches long, only your net is not adapted to catch them. The icthyologist dismisses this objection contemptuously. Anything uncatchable by my net is ipso facto outside the scope of icthyological knowledge. You are a metaphysician. On Truth Truth is stranger than fishin'.
Some fishes become extinct, but Herrings go on forever.
Herrings spawn at all times and places and nothing will induce them to change their ways. They have no fish control. Herrings congregate in schools, where they learn nothing at all. They move in vast numbers in May and October. Herrings subsist upon Copepods and Copepods subsist upon Diatoms and Diatoms just float around and reproduce.