A photographer's mate/diver films activities as members of a Navy sea-air-land (SEAL) team descend toward the submerged nuclear-powered strategic missile submarine USS WOODROW WILSON (SSBN 624). The SEAL team is taking part in lock-out procedures off the coast of Puerto Rico.

Beginning in ancient times, humans sought to operate under the water. The legendary origins of the submarine stretch back to 332 BC with a tale about Alexander the Great being lowered into the sea in a glass barrel to study fish. The submarine concept was thereafter consigned to the backwaters of history for some 1,800 years. This collection presents various submarines: from small and simple to nuclear-powered underwater behemoths.

This is a collection of high-resolution scuba diving photos that you can use for free. Not only it is free to use without restrictions, but probably the largest collection of this type. Large Picryl public domain collections are made possible with aid of GetArchive's Image recognition technology.