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Invertebrates
Three invertebrates - a water flea, a green hydra, and a planarian flatworm - engage in a food-chain fight after the hydra tries to eat the flea.
★ 0.0 13 min 2011-06-30
Back to Details Three invertebrates - a water flea, a green hydra, and a planarian flatworm - engage in a food-chain fight after the hydra tries to eat the flea.
