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Dr George McGavin joins a team of international scientists as they investigate the extraordinary natural history event of an 'arribada' - the mass nesting phenomenon of olive ridley sea turtles in Costa Rica, Central America.
Watch Nature's Turtle Nursery: Inside the Nest on the BBC: https://bbc.in/2JYqYUq
Nature's Turtle Nursery: Inside the Nest | Trailer - BBC Four ─ BBC
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