THE U.S. MILITARY IS REPORTEDLY TESTING UNDERWATER BULLETS
https://futurism.com/the-byte/us-underwater-bullets
https://futurism.com/the-byte/us-underwater-bullets
Military contractor DSG Technologies created a bullet that has its tip coated in tungsten,
allowing it to create a small air bubble in front of it — a process called “supercavitation.
A .50 caliber CavX round can travel 60 meters underwater, according to Defense One.