Ocean

The Ocean is a large body of Water found on the surface of each map, at its far left and right edges, comprising the eastern 500ft (250 blocks) and the western 500ft of the map (at least on Large maps; it is closer to 150 on Small). It extends as deep as the Cavern Layer, with its maximum depth reached at the very edges of the map.

Oceans will commonly contain Water Chests with loot pertaining to water. They also contain unique enemies, like Crabs and Sharks.

The Ocean Biome contains its own Tree type, Palm Trees (since 1.2.4), which can be harvested for Palm Wood.

Tips

 * If players without proper accessories try to swim to the side of the map, there is a serious risk of drowning. In addition to plenty of healing potions, bring items and potions that aid breathing, such as the Breathing Reed and Gills Potion, a Magic Mirror for returning home quickly, and Flippers to aid swimming. The Grappling Hook or Ivy Whip may also be of some help in returning to the surface for breath.
 * Players may attempt to drain the ocean by tunneling down to the Underworld, where water evaporates. The Ocean is in fact drainable this way, and this method will allow the player to go back to the Ocean floor and easily pick up all the Coral without worry of drowning.
 * Another way of draining the ocean is by making an air pocket, empty a bucket of lava in it and place a background object (chest, crystal shard etc.) in the lava. After that allow the water to flow in. The object will prevent obsidian from being generated, causing all the water to disappear.

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