The seas are considered cruel mistresses, and it behooves one to either stay clear or be prepared to face its unpredictable wrath.
Considering that the surface of the planet
consists of 71% water, it's probably in the US military's best interest to be prepared to perform both in land and sea.
Here are 17 pictures that show how they train for amphibious warfare:
How the US military prepares for amphibious warfare (BI)
An instructor with the Animal Packers Course sings the "Marines' Hymn" after completing a plunge into freezing water as part of the Winter Mountain Leaders Course.
Cpl. Charles Santamaria/US Marine Corps)
Recon Marines enter the water with their ankles bound and hands clenched tightly together during a proficiency screening at Camp Schwab in Japan.
(Photo via US Marine Corps)
Republic of Korea marines with the US 7th Marine Regiment participate in a mock amphibious landing during an exercise.
Force Recon Marines sprint into the water with their F470 Combat Rubber Raiding Crafts in preparation for hydrographic reconnaissance training at Marine Corps Training Area Bellows in Waimanalo, Hawaii.
US Marine Corps)
A shallow-water egress trainer observes as a Marine goes upside down and attempts to breath compressed air from an emergency breathing system at Marine Corps Base Hawaii.
Cpl. Matthew Callahan/US Marine Corps)
US Marines with a Special Operations Training Group practice breaching and riding on Combat Rubber Raiding Crafts.
US Marine Corps)
Special warfare combatant-craft crewmen and members of the US Army 160th Special Operations Aviation Regiment (SOAR) conduct a Maritime External Air Transportation System training evolution in Moses Lake, Washington.
Sgt. Christopher Prows/US Army)
See Also: SEE ALSO: How China's navy rapidly modernized to rival the US's Related: Amphibious landing practice in Hawaii: