submarine

n.

A vessel that is capable of operating submerged.

Also called sub, pigboat, U-boat.

aircraft carrier

n.

A large naval vessel designed as a mobile air base, having a long flat deck on which aircraft can take off and land at sea.

Synonyms:

attack aircraft carrier, flattop, carrier

tsunami

n.

A very large ocean wave caused by an underwater earthquake or volcanic eruption.

The term tsunami comes from the Japanese language meaning harbour ("tsu", 津) and wave ("nami", 波).

Synonym:

tidal wave

scuba

n.

A portable apparatus containing compressed air and used for breathing under water.

Scuba is an acronym for self-contained underwater breathing apparatus.

Also called aqualung.

prawn

n.

Any of various edible crustaceans similar to but larger than the shrimps.

As used in commercial farming and fishery, the terms shrimp and prawns are generally used interchangeably. In European countries, particularly the United Kingdom, the word "prawns" is more commonly on menus than the term "shrimp", which is used more often in the United States. Australia and other commonwealth countries follow this European/British use to an even greater extent, using the word "prawn" almost exclusively.

shrimp

n.

Any of various small slender-bodied chiefly marine decapod crustaceans with a long tail and single pair of pincers. Shrimps are usually caught commercially and used for food, becoming pink when boiled.

intr.v.

To fish for shrimp.

coral

n.

1. A rocklike deposit consisting of the calcareous skeletons secreted by various anthozoans.

2. Any of numerous chiefly colonial marine polyps of the class Anthozoa that secrete such calcareous skeletons.

adj.

Like coral in color; pink or red