Hawaii Scientists Study Threatened Shark Species

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bay – n. a large area of water that is part of an ocean or lake and partly surrounded by land

sensor – n. a device that detects or senses heat, light, sound, motion, etc., and then reacts to it in a particular way

aggregation – n. a group

endangered – adj. used to describe a type of animal or plant that has become very rare and that could die out completely

dominant – adj. more important, powerful, or successful than most or all others

alter – v. to change (something)