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25 terms

Apologia Zoology 2 - Lesson 1

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Benthic Animals
Animals that don't swim but scurry, crawl, hop, scoot, burrow or slither across the bottom of a body of water.
Sessile Animals
Sea animals that stick themselves to one place and don't move such as sponges and corals.
Plankton
Two kinds- phytoplankton and zooplankton. Creatures that drift in the sea.
Phytoplankton
A lot like plants, use the sun to make food.
Zooplankton
Eat to get food, often eating phytoplankton. Weak swimmers so they drift on the current. The lion's mane jellyfish is an example of a large one.
Filter Feeders
Animals that clean up the oceans and rivers of the world by eating the microscopic creatures and debris that float about in the water. "Cleaning Crew"
Surface Currents
Currents that form on the surface of the ocean. Mainly formed by winds.
Gyres
Circular patters formed by surface currents
Thermohaline Currents
Currents caused by heat or salt
Ocean's Tide
Water that is either moving closer to the shore or farther away. High tide is when the water is closer, low tide is when it is further away.
Spring Tide
During a new moon or full moon the high tide is higher than usual and the low tide is lower than usual. Caused by the sun working with the moon to pull on the oceans.
Neap Tide
When the sun's gravity works against the moon's gravity causing the high tides to be lower and the low tides to be higher.
Four Oceans of the World
Pacific, Atlantic, Indian and Arctic
Seas
Smaller than oceans but made up of salt water because they are connected to oceans.
Estuary
Place where a river meets with an ocean.
Brackish
A term that describes where river water meets the ocean and gets salty.
Continental Shelf
Part of the continent that is under water
Continental Slope
The drop off at the end of the continental shelf.
Continental Rise
The gentle slope at the very end of the continental slope, it's not as steep.
Abyssal Plain
The ocean floor
Sunlit Zone
Part of the ocean that is well-lit by the sun
Twilight Zone
Fairly dark part of the ocean under the sunlit zone where fewer animals live
Midnight Zone
Deepest, darkest part of the ocean where no sunlight reaches.
Bioluminescence
The ability of sea creatures in the midnight zone to make their own light.
Submersibles
Ships designed to go deep into the ocean.