Ocean Zones - Midland High School

Ocean Zones - Midland High School

In Ocean Zones Lifestyles In The Zone Lifestyles Goals: 1. Describe and identify the different zones and layers of the ocean 2. Correlate layers with others 3. Use context clues to identify which

layers and zones certain animals live in Ocean Zones (shoreline to open ocean) Intertidal Zone Neritic Zone Oceanic Zone Benthic Zone

Intertidal Neritic Zone Zone Continental Shelf Oceanic Zone

Sunlight Benthic Zone Intertidal Zone Intertidal Zone Continental Shelf

Area between high tide line and low tide line Organisms adapted to harsh, changing environments Neritic Zone

Area over the continental shelf Area of greatest density and diversity of marine life Neritic Zone

Continental Shelf Oceanic Zone Oceanic Zone Continental Shelf

From the continental break out to open ocean Majority of the ocean Benthic Zone The Ocean Floor

Underlies all the other zones Benthic Zone Ocean Zones (surface to ocean floor) Epipelagic Zone

Photic Zone or Sunlight Zone Mesopelagic Zone Disphotic Zone or Twilight Zone Bathypelagic Zone Aphotic zone or Midnight Zone Abyssopelagic Zone Aphotic Zone or Midnight Zone

Hadopelagic Zone Aphotic Zone or Midnight Zone Epipelagic Zone Mesopelagic Zone Bathypelagic Zone Abyssopelagic Zone 0 200

1000 4000 6000 Hadopelagic Zone 11,000 Epipelagic Zone

Epipelagic Zone Sunlight Zone 0m 200m Photic Zone

Photic Zone Enough sunlight for photosynthesis Primary area of food production From surface down to about 200 meters Mesopelagic Zone

Mesopelagic Zone 200m 1,000m Dysphotic Zone

Not enough sunlight to support photosynthesis From about 200 m down to 1,000 m Midnight Zones 1,000m

Midnight Zone 11,000m No sunlight From 1,000 m down to ocean floor, or around 11,000 m

Low density and diversity of marine life Bathypelagic Zone Bathypelagic Zone 1,000m

4,000m No sunlight From 1,000 m down to 4,000 m Low density and diversity of marine life

Abyssopelagic Zone No sunlight From 4,000 m down to 6,000 m Low density and diversity of marine life

Abyssopelagic Zone 4,000m 6,000m Hadopelagic Zone

Hadopelagic Zone 6,000m 11,000m No sunlight From 6,000 m down to ocean floor, or around 11,000 m Low density

and diversity of marine life Lifestyles 3 Basic Lifestyles: Plankton Nekton Benthos

Plankton Floaters or very poor swimmers Plankton divided into 2 groups: Phytoplankton producers, photosynthesizers Zooplankton consumers Phytoplankton

Must live in the photic zone Most abundant in shallow coastal areas or in

upwelling zones The basis of the oceanic food web Phytoplankton Cyanobacteria

Diatoms Coccolithophores Dinoflagellates Zooplankton Foraminifers Radiolarians Cnidarians Combjellies Arthropods Larvae

Zooplankton Plankton Meroplankton Spend only part of their life cycles as plankton Are the larval stages of organisms that

grow to become benthic or nektonic organisms Holoplankton Spend their entire life cycles as plankton Nekton (swimmers) Free swimmers

Maneuver actively in the water column Found in the water column from surface to ocean floor Nekton (swimmers) 5 Categories:

Reptiles Mammals Fish Arthropods Mollusks Nekton (swimmers) Marine Reptile

Turtles Snakes Crocodiles Iguanas Nekton (swimmers) Marine Mammals:

Whales Seals Otters Manatees Dolphins Nekton (swimmers) Bony Fish:

Tuna Barracuda Eels Angler Fish Nekton (swimmers) Cartilaginous Fish

Sharks Rays Skates Nekton (swimmers) Marine Arthropods Shrimp

Mollusks Squid Octopi Benthos (bottom dwellers) Live either on or attached to the bottom

Primarily filter feeders or scavengers Benthos (bottom dwellers) 2 Basic Types: Sessile - Live attached to the bottom

Vagrant - Able to move about Benthos (bottom dwellers) Sessile: Barnacles Sponges Corals

Sea Anemones Oysters Clams Benthos (bottom dwellers) Vagrant: Crabs Sea Stars

Sea Cucumbers Sea Urchins Brittle Stars What Am I? What Am I? What Am I?

What Am I? What Am I? What Am I? What Am I? What Am I? What Am I?

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