The Tarzan actor who was also an Olympic swimmer was called Johnny Weismuller, I believe.
A girl or woman swimmer can be called a "naiad."
Torpedo...
A torpedo.
no
Nageur
diver
Torpedo
Photon Torpedoes.
Ian Thorpe - an Australian swimmer - was sometimes called thorpedo.
Torpedoes were originally launched from torpedo boats in the 1870s. Although TBs were still used, by the Russo-Japanese War of 1904, Torpedo Boat Destroyers (TBDs) were more effective in launching torpedoes; as well as destroying TBs. Which is why they were called "destroyers", because they originally were designed to "destroy (kill)" torpedo boats.
Torpedo