Assassinating enemy divers with CO2-filled syringes? Parachuting from the sky and blowing up enemy ships kamikaze-style? Acoustically detecting a 3-inch ball 200 meters away in complete darkness? All this and more as Skeptoid covers the James Bond’s of the sea, deployed first by the USSR and today by the Indian Navy and U.S. Navy Marine Mammal System:
Dolphins and sea lions have advantages that are hard for navies to ignore. They swim far faster than divers, and are much easier and cheaper to deploy than remote underwater vehicles. They can dive hundreds of meters and return, with no concern about decompression, quicker than a human diver could even get suited up. Dolphins’ underwater acuity is such that they can acoustically detect a 3-inch ball 200 meters away in complete darkness, and even discriminate between different kinds of metal. A dolphin’s brain is famously larger than a human’s, in part because so much of it is dedicated to processing sonar signals.