Ocean Zones and Lifestyles

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Presentation transcript:

Ocean Zones and Lifestyles Just when you thought you knew all of the zones…

Pelagic Organisms that can swim up and down in the water column

Shore to Open Ocean Intertidal Neritic Oceanic Benthic *Draw a quick sketch in your notes

Intertidal Area between the low tide line and high tide line Organisms here are adapted to harsh, changing environment

Neritic Area over the continental shelf Greatest density and diversity of life

Oceanic Zone Edge of the continental shelf across the open ocean

Benthic The ocean floor – underlies all the other zones

Organism Lifestyles Plankton Nekton Benthos

Plankton Free floating plants and animals Phytoplankton – plants Diatoms Dinoflagellates Zooplankton – animals Larvae Comb jellies Forams

Nekton Free swimmers Aquatic animals that are able to swim and move independently of water currents. Examples: Reptiles, mammals, fish, arthropods and mollusks

Benthos Bottom dwellers 2 Types Sessile – live attached to the bottom or another organism Examples: Barnacles, sponges, corals, anemones, oysters Vagrant – able to move about Examples – crabs, sea stars, sea cucumbers, sea urchins