Presentation on theme: "NERITIC ZONE & OPEN OCEAN A. Conditions in the Neritic Zone: - located over continental shelf - kelp forest - low tide line to continental shelf - wide."— Presentation transcript:
NERITIC ZONE & OPEN OCEAN A. Conditions in the Neritic Zone: - located over continental shelf - kelp forest - low tide line to continental shelf - wide variety of organisms - receives a lot of sunlight - upwelling current provides steady supply of nutrients.
CORAL REEFS 1. Environment of Coral Reefs: Can only be formed in shallow tropical ocean water. Above continental shelf around volcanic islands 2. Ring-Shaped Reefs: Atoll: ring shaped reef surrounding a shallow lagoon.
C ORAL R EEF ( CONT.) 3. Life Around a Reef: Shapes: Elkhorn Brain Plate Star: Organisms: Coral Spiny lobsters Shrimp Octopuses Fish 4. Coral Reefs and Humans: Protects coast lines Divers damage reefs
L IFE IN A KELP FOREST 1. Environment of Kelp Forest: cold Neritic waters with rocky floor Kelp large heavy algae Kelp contains air bladders that help it float. 2. Providing A Habitat: Young gray whales Sea slugs and snails Sea otters
C ONDITIONS IN THE O PEN OCEAN begins at the edge of the Neritic zone to the edge of the continental shelf. Only a small part receives sunlight Fewer nutrients 1. The Surface Zone: (Photic zone) Surface to as far as sunlight reaches Organisms: krill, crabs, mollusks and fish.
C ONDITIONS IN THE O PEN OCEAN ( CONT.) 2. The Transition Zone: - bottom of surface zone to 1 kilometer. 3. The Deep Zone or Aphotic zone: - darkest and coldest - few organisms - many produce their own light - Bioluminescence: the production of light from a living organism via chemical reactions. - Chemosynthesis: the production of organic material by energy from chemical reactions rather than light.
H YDROTHERMAL VENTS hot water rising out of cracks in the ocean floors.