Oceanic Provinces and Zones

Oceanic Provinces and Zones Section II of Chapter 2

Benthic environment: inhabited by 98% of ocean species; this is the ocean bottom Pelagic environment: this is the open ocean

Name which of the two environments each organism will be found in: 1. sea star (benthic) 2. porpoise (pelagic) 3. stingray (pelagic) 4. tube worm (benthic)

Benthic zones and provinces Subneritic province: sea floor on continental shelf Littoral zone: region between high and low tide marks Sublittoral zone: region extending from low tide mark to shelf break Suboceanic province: sea floor beyond the shelf break Bathyal zone: (200-4000 m) sea floor on continental slope Abyssal zone: (4000-6000 m) sea floor on abyssal plains Hadal zone: (6000+ m) sea floor in trenches

Pelagic zones and provinces Neritic province: water above continental shelf Oceanic province: water above the continental slope and abyssal plains Epipelagic zone: (0-200 m) 1, 9 Mesopelagic zone: (200-1000 m) 2, 4, 5, 6, 7 Bathypelagic zone: (1000-4000 m) 3, 8 Abyssopelagic zone: (4000-6000 m) 8 Hadal zone: (6000+ m) 8

Put the following features next to the zone they belong in 1. euphotic zone 2. disphotic zone 3. aphotic zone 4. bioluminescence 5. deep scattering layer 6. critical depth 7. dissolved oxygen minimum 8. blind animals 9. oxygen compensation depth