Lifestyles

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Lifestyles

• In Ocean Zones

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Ocean Zones(shoreline to open ocean)

• Intertidal Zone
• Neritic Zone
• Oceanic Zone
• Benthic Zone

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Intertidal Zone
Neritic Zone
Oceanic Zone
Sunlight
Continental Shelf
Benthic Zone
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Intertidal Zone

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

Intertidal Zone
Continental Shelf
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Neritic Zone

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

Neritic Zone
Continental Shelf
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Oceanic Zone
Oceanic Zone

• From the continental break out to open ocean

Continental Shelf
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Benthic Zone

• The Ocean Floor
• Underlies all the other zones

Benthic Zone
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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

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Sunlight or Photic Zone
0
Transition Zone
200
Midnight Zone Abyssal Zone

1000 4000 6000
11,000
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Midnight Zones

• No sunlight
• From 1,000 m down to ocean floor, or around
  11,000 m
• Low density and diversity of marine life

1,000m
Midnight Zone
11,000m
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Lifestyles

• 3 Basic Lifestyles
• Plankton
• Nekton
• Benthos

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Plankton

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

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Phytoplankton

• Must live in the photic zone
• Most abundant in shallow coastal areas or in
  upwelling zones
• The basis of the oceanic food web

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Phytoplankton

• Cyanobacteria
• Diatoms
• Coccolithophores
• Dinoflagellates

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Zooplankton

• Foraminifers
• Radiolarians
• Cnidarians
• Combjellies
• Arthropods
• Larvae

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Zooplankton
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Nekton(swimmers)

• Free swimmers
• Maneuver actively in the water column
• Found in the water column from surface to ocean
  floor

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Nekton(swimmers)

• 5 Categories
• Reptiles
• Mammals
• Fish
• Arthropods
• Mollusks

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Nekton(swimmers)

• Marine Reptiles
• Turtles
• Snakes
• Crocodiles
• Iguanas

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Nekton(swimmers)

• Marine Mammals
• Whales
• Seals
• Otters
• Manatees
• Dolphins

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Nekton(swimmers)

• Bony Fish
• Tuna
• Barracuda
• Eels
• Angler Fish

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Nekton(swimmers)

• Cartilaginous Fish
• Sharks
• Rays
• Skates

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Nekton(swimmers)

• Marine Arthropods
• Shrimp
• Mollusks
• Squid
• Octopi

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Benthos(bottom dwellers)

• Live either on or attached to the bottom
• Primarily filter feeders or scavengers

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Benthos(bottom dwellers)

• 2 Basic Types
• Sessile - Live attached to the bottom
• Vagrant - Able to move about

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Benthos(bottom dwellers)

• Sessile
• Barnacles
• Sponges
• Corals
• Sea Anemones
• Oysters
• Clams

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Benthos(bottom dwellers)

• Vagrant
• Crabs
• Sea Stars
• Sea Cucumbers
• Sea Urchins
• Brittle Stars

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What Am I?
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What Am I?