深しん海かい帯たいMeanings1nounabyssal zoneOceanographic term for the deep-sea layer typically below 2000–4000 meters, characterized by high pressure, low temperature, and absence of light.深しん海かい帯たいには独どく特とくの生せい態たい系けいが存そん在ざいする。A unique ecosystem exists in the abyssal zone.
