In the bathypelagic zone, diversity of pelagic species appears to peak at around 1,000 metres partially because the mesopelagic and bathypelagic faunas mix at these depths.
19. 在海洋深层水层物种的多样性似乎在水深1 000米左右最高，其部分原因是中层和深层动物混居在这一深度。