hemipelagic region

The region of the ocean extending from the edge of a shelf to the pelagic environment; roughly corresponds to the bathyal zone, in which the bottom is 660 to 3300 feet (200 to 1000 meters) below the surface.

Related terms:

• hemipelagic sediment
• epipelagic zone
• eulittoral
• archibenthic zone
• neritic
• deep-marine sediments
• sublittoral zone
• ice island
• source region
• air-mass source region