This fish may be humanity's one connection with our sea-dwelling past [Evolution]

This fish may be humanity's one connection with our sea-dwelling past [Evolution]:

Lungfish are a peculiar type of fish that can survive for an extended period on land. Using their pectoral fins to propel themselves, they can gulp air and live for some time
out of the water — and they're the sole surviving creature that could explain how we evolved to leave the oceans. More »

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