Flip Nicklin / Sperm Whale (Physeter macrocephalus) researcher, Hal Whitehead, listening for whales on hydrophone, Sri Lanka
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Flip Nicklin / Sperm Whale (Physeter macrocephalus) researchers on sailboat looking for whales, Sri Lanka
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Flip Nicklin / Sperm Whale (Physeter macrocephalus) researcher, Phil Gillian, listening for whales on hydrophone about Hal Whitehead's boat, Balaena, Sri Lanka
