> (algae-eating whales)
Actually, baleen whales live primarily on animal foods: zooplankton
(krill) and schooling fishes. Algae no doubt forms the base of the
ocean food chain, with the plankton and schooling fishes only a little
higher in the chain, but the whales don't rely directly on algae.
http://www.seaworld.org/baleen_whales/dietbw.html
Bill