Story: Deep-sea creatures

Zones of the ocean

Zones of the ocean

Five depth zones have been identified in the ocean. Life is most abundant in the uppermost ‘euphotic’ layer, where photosynthesis occurs. The mesopelagic is practically dark, and many creatures hide here during the day. The bathypelagic zone begins at 1,000 metres, where the pressure is nearly 100 times greater than at the surface. Below that lies the abyssopelagic zone, down to the sea floor – except where ocean trenches cut through the sea bed, creating what is called a hadopelagic zone.

Using this item

Te Ara - The Encyclopedia of New Zealand

This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.

All images & media in this story

How to cite this page:

Paddy Ryan, 'Deep-sea creatures - Exploration of the deep', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/diagram/5239/zones-of-the-ocean (accessed 22 July 2018)

Story by Paddy Ryan, published 12 Jun 2006