Our Oceans
This ocean is the largest ocean on Earth.
What is the Pacific Ocean?
This region never gets too cold and has the most biodiversity.
What is the tropical region?
Whales, dolphins, seals, and sea otters belong to this major animal group.
What are mammals?
This is the amount of species living in a particular area.
What is biodiversity?
This zone includes the seafloor at all depths.
What is the benthic zone?
This ocean is the smallest ocean and is mostly covered in sea ice during winter.
What is the Arctic Ocean?
This region has temperatures that fluctuate seasonally.
What is the temperate region?
Sharks and rays belong to this major animal group.
What are fish?
Temperature, salinity, depth, and sunlight are examples of these factors.
What are abiotic factors?
This is the largest ecosystem on Earth and consists of the water of the open ocean.
What is the pelagic zone?
This ocean is getting larger because of seafloor spreading.
What is the Atlantic Ocean?
This region is always cold and has the least biodiversity.
What is the polar region?
Corals, jellyfish, and anemones belong to this invertebrate group.
What are cnidarians?
Interactions between living things in an ecosystem are called these factors.
What are biotic factors?
This shallow-water zone lies over the continental shelf and is considered the most productive zone.
What is the neritic zone?
Name the five oceans shown in your notes.
Pacific, Atlantic, Indian, Arctic, and Antarctic/Southern Oceans.
As you move from the equator toward the poles, oceans differ greatly in these conditions.
What are temperature and biodiversity?
Octopuses, squid, clams, oysters, slugs, and conchs belong to this group.
What are mollusks?
A kelp forest has kelp competing for sunlight, small fish being eaten by larger fish, and kelp providing habitat. Are these abiotic or biotic factors?
What are biotic factors?
This zone is beyond the continental shelf.
What is the oceanic zone?
The oceans cover approximately this percentage of Earth's surface and contain more than this percentage of Earth's water.
What are 71% and 97%?
If you were looking for an ocean region with the greatest biodiversity based on your notes, which region would you choose and why?
What is the tropical region, because it has the most biodiversity.
A student finds a crab, jellyfish, octopus, and starfish. Identify the four different invertebrate groups they represent.
Crab → Arthropod
Jellyfish → Cnidarian
Octopus → Mollusk
Starfish → Echinoderm
A marine ecosystem experiences an extreme change in one of its abiotic factors. Based on your notes, what could happen to its biodiversity?
Biodiversity could decrease because extreme abiotic conditions can reduce biodiversity.
Name the five major pelagic depth zones from shallowest to deepest.
Epipelagic → Mesopelagic → Bathypelagic → Abyssopelagic → Hadalpelagic