Science / Marine Biology / Abyssopelagic Zone: 'Abysso' meaning 'no bottom', this zone of the ocean begins 4000 m below the surface of the ocean and extends down to the sea floor. This zone is home to a variety of unique critters that are specially adapted to the inhospitable conditions that these depths create. Visit the Abyssopelagic Zone on oceanlink to learn about life in the abyss.
Zone Noun Synonyms: area, quarter, district, region, sector, section, sphere, belt, territory, province, realm, domain, precinct, bailiwick, department, terrain, circle, locality, locale, turf
Health / Fitness / Target Heart Rate Zone: The number of heartbeats per minute reflecting the exercise intensity that gains the maximum training benefits from an aerobic workout. The formula for obtaining a target heart rate equals 220 minus y MORE
Science / Geology / Surf Zone: An area of breaking waves bounded by the point of first breakers, then landward to the maximum uprush of waves on the beach. MORE