Aqueous
Lives in or found near the water.
Aquatic
Extreme Thirst
Mythological serpent with many heads; when one is cut off, two more appear.
Hydra
A scuba diver who lives for a long while in an underwater shelter used as a base for research
Aquanaut
An underground layer of rock or sand that can absorb and hold water.
Aquifer
A person trained to work in deep-sea vessels (other than a submarine) for research and rescue purposes.
Hydronaut
Operated by fluid or water pressure
Hydraulic
An etching that looks like a watercolor.
Aquatint
A container filled with water that holds fish, plants and other marine creatures
Aquarium
To add water or moisture to something.
Hydrate
flowering bush with showy clusters of white, pink, blue flowers; has a cup shaped seed pod.
Hydrangea
A strong alcoholic liquor, such as brandy
aqua vitae
An elevated conduit for water, especially used in ancient Rome.
Aqueduct
Fear of water.
Hydrophobia
A pipe connected to a water source with a valve and spout; used to put out fires.
Hydrant
A portable breathing apparatus for divers; a SCUBA tank
Aqualung
A pale greenish-blue color
Aquamarine
Dry, without water.
Anhydrous
Simplest and lightest element; and essential part of water.
Hydrogen