• Plants and/or animals living in oceans, estuaries, lakes, rivers, streams, wetlands, and ponds (aquatic environments).
• Water, as in rivers, lakes, oceans, groundwater, is NOT aquatic. Surface water bodies like rivers, lakes, etc. and groundwater are better referred to as Water Resources.
• Shorthand for an aquatic plant.
• Aquatic ecology (limnology), a discipline that uses the principles and methods of ecology to study natural organisms that live in water, and thus make up Aquatic ecosystems.
• Aquatic ecosystem, an ecosystem located in a body of water.
• Aquatics, another name for watersports.

See also

• Marine biology
• Freshwater biology
• Aquatic animal
• Limnology – study of inland waters
• Oceanography – study of marine environments