U.S. Navy dolphins - GIF

Dolphins trained under the U.S. Navy's Marine Mammal Program. The animals were trained as harbor sentries, detect and clear mines, recover equipment.

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Previously:

https://www.homemadetools.net/forum/...130#post180308
https://www.homemadetools.net/forum/...748#post124119
https://www.homemadetools.net/forum/...320#post150468
https://www.homemadetools.net/forum/...648#post174420

except for the color it looks more like a beluga than a dolphin

If they're giving thought to teaching them to attach limpet mines to enemy ships, I hope they remember what happened with the incendiary bats.