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.
muttering 'hredeuced, simpehl chrahstaceans' under my breath like werner herzog any time someone annoys me online