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

3:09 4 කථානායක 2 පරිච්ඡේද 29 කොටස්

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    Sailfish, three meters long, are closing in on prey. They will only use just enough energy to make their kill, never wasting a fin stroke. Nearly a hundred sailfish have surrounded a single school of baitfish. It's very rare to see so many …