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lagoon - n. an area of sea water that is separated from the ocean by a reef or sandbar
shoal - n. a large group or number of fish
lily pad - n. a large, floating leaf of a plant (called a water lily) that grows in the water of a pond or pool
swarm - n. a very large number of things moving together
society - n. the people of a particular country, area, time, etc., thought of especially as an organized community
innovation – n. an intention; a new method or device
artificial intelligence – n. the power of a machine to copy intelligent human behavior
sonar – n. a communications and position-finding device used in underwater operations
battery – n. a device able to provide electrical current
sewer – n. a pipe or underground system used to carry away waste products and liquids
