These photos show how the US military trains for amphibious warfare
The seas are considered cruel mistresses, so it's necessary for one to either stay clear or be prepared to face their 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 on land and at sea.
Here are 17 pictures that show how it trains for amphibious warfare: