Life in the Ocean Mr. Silva Ag Earth Science Ag Earth Science Ag Earth Science Ag Earth Science
21.2 Life in the Ocean1. Sunlight and Marine Life a. Plant growth is restricted to the ocean surface layer in order to get enough sunlight to sustain photosynthesis - 100m depth. - Plankton live at this depth as well a. This is the tidal range or intertidal zone
21.2 Life in the Ocean2.Ocean Environments a. Benthic zones: the bottom (land) area of the ocean i. Intertidal zone ∀ Located between the tides ∀ includes marine life attracted to sun
21.2 Life in the Oceanii. Sublittoral zone ∀ Located on the continental shelf ∀ Includes small “attached” organisms
21.2 Life in the Oceaniii. Bathyal zone ∀ Covers the continental slope ∀ Very little plant life since there is no light
21.2 Life in the Oceaniv. Abyssal zone ∀ Located along the abyssal plains ∀ Organisms live constantly in darkness
21.2 Life in the Oceanv. Hadal zone ∀ Confined to ocean trenches ∀ Organisms depend on food to fall from above
21.2 Life in the Oceanb.Pelagic zones: the water area of the ocean i. Neritic zone • Located above the continental shelf • Ideal area for all marine life ii. Oceanic zone (four layers based on depth) • Epipelagic • Mesopelagic ∀ Bathypelagic ∀ Abyssopelagic
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