adjective Date: 1947 of or relating to oceanic depths from about 600 feet to 3000 feet (200 to 1000 meters)
MESOPELAGIC
Meaning of MESOPELAGIC in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012