filter feeding is really funny as a life strategy because it's like, oh yeah here's this group of reduced, simple crustaceans that do it. here's this group of reduced, simple cnidarians. here's this group of reduced, simple molluscs. here's the largest animal on earth. here's this group of reduced, simple chordates.
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in reply to @bruno's post:
Whales and sharks independently arrived at the conclusion that the best way to get big is to eat big thing, but the best way to get REAL BIG is to eat tiny thing
understand: what whales consider to be "filter feeding" is shrimp the size of your little finger. Imagine just tilting a seafood buffet up into your gullet. That's what a whale does.
