The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth

Jul 03, 2026 16:54 · 3:09 · English · Whisper Turbo · 4 Cynhadledd
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
Sailfish,
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
three meters long,
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
are closing in on prey.
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S… Speaker 2 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
They
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
will only use just enough energy to make their kill,
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
never wasting a fin stroke.
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S… Speaker 2 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
Nearly
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
a hundred sailfish have surrounded a single school of baitfish.
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
It's very rare to see so many of these hunters in one place.
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S… Speaker 2 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
To herd
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S… Speaker 4 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
their prey,
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
the predators raise their huge dorsal fins.
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
A mistimed strike by one sailfish could fatally damage another,
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
but each continually changes its colour from blue to
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
striped to black.
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
That warns its companions of its intentions and
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
also confuses the prey.
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
As the shoal
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
is driven nearer the surface,
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
it comes within the range of the seabirds.
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S… Speaker 2 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
Out
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
here in the open ocean,
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
there is nowhere for the baitfish to hide.
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S… Speaker 2 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
Sailfish
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
live a high -octane life.
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
To survive,
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
they must find prey daily,
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S… Speaker 1 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
so their entire existence will be spent on
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S… Speaker 3 (The Deadly Fish That Changes Colour to Hunt - 20 Years of Planet Earth - BBC Earth)
the move.

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