Presentation is loading. Please wait.

Presentation is loading. Please wait.

COASTAL ZONES Ocean Zones. there are several different ocean zones that are determined by: – light – depth – bottom divisions.

Similar presentations


Presentation on theme: "COASTAL ZONES Ocean Zones. there are several different ocean zones that are determined by: – light – depth – bottom divisions."— Presentation transcript:

1 COASTAL ZONES Ocean Zones

2 there are several different ocean zones that are determined by: – light – depth – bottom divisions

3 Ocean Zones by Light

4 Classification by Light: 0-200m m 1000m+

5 1. euphotic zone 0-200m ‘sunlit layer’ at ocean’s surface all photosynthesis in this zone 2. disphotic zone (aka ‘twilight zone’) 200 – 1000m animals can see, but have adaptations( ex. bioluminescence) not enough light for photosynthesis 3. aphotic zone 1000m and below largest region, NO LIGHT!

6

7 Ocean Zones by Surface Location 1. neritic zone – near coast – spans from the low-tide line to the edge of the continental shelf in ocean 2. oceanic zone – is the part of the open sea or ocean that is not near the coast

8

9 Ocean Zones by Depth 1. pelagic upper layers of the OPEN SEA -epipelagic -mesopelagic -bathylpelagic -abyssalpelagic 2. benthic OCEAN BOTTOM, living in or on the bottom of a body of water

10

11 1: Pelagic zone (4 Depth Zones) 1. epipelagic zone (0-200m) receives enough sunlight to support photosynthesis; relatively warm, well lit, most life in this zone 2. mesopelagic zone ( m) only small amounts of light; animals must survive cold temps, high pressure and very dim light

12 3. bathypelagic zone (1000m-4000m) no light, so no plant life; very few animal species; species such as giant squid, angler fish etc. 4. abyssal pelagic (4000+ m) deep sea area; very dark, cold, and covered in sediment; makes up 85% of the ocean environment! contains brittle stars, sea urchins, sand dollars etc.

13 Benthic Zone ocean bottom- contains many bottom dwellers such as shellfish, worms, and other scavengers 1)littoral zone – shallow water between high and low tides 2) sublittoral zone - ocean bottom near shore and out to edge of continental shelf 3) bathyal zone - seabed on the continental slopes 4) abyssal zone - deepest sea bed, trenches and floors

14 OCEAN ZONES

15


Download ppt "COASTAL ZONES Ocean Zones. there are several different ocean zones that are determined by: – light – depth – bottom divisions."

Similar presentations


Ads by Google