Mariner Review
What percent of the earth is covered by ocean?
About 70 percent is covered by ocean.
Deepest Ocean in the world.
The Pacific Ocean.
This zone receives no sunlight.
True. No sunlight reaches this zone.
Name each ocean zone along with at least one sea creature that lives in it.
Sunlight zone: Otters, sea urchins, coral, seaweed, kelp, sharks, tuna, mackerel, jellyfish, sea turtles, seals and sea lions and stingrays
Twilight zone: Shrimp, hatchet fish, swordfish, sponges, octopus, squid, mid-water jellyfish, whales, angler fish
Midnight zone: The angler fish, the blob fish, giant squid, snailfish, sea cucumbers, jellyfish,
What is the deepest point in the whole ocean?
1. The dark, no sunlight.
2. The cold, it is very cold down in the ocean depths with some places just above freezing. "below about 200 meters (656 feet) depth, ocean waters have an average temperature of only 4°C (39°F)."
3. The extreme ocean pressure.
The average depth of the Midnight zone is from 1,000-4,000 meters (3,300 - 13,100 feet).
True.
How do Kelp forests get their food? Can you name at least two sea creatures that live in Kelp forests?
Kelp Forests get their food through photosynthesis.
Lots of sea creatures make their home in the kelp forests. Some that we've talked about are Sea Otters, Sea Urchins, fish.
What are three things that make life in the deepest part of the ocean difficult?
1. The dark, no sunlight.
2. The cold, it is very cold down in the ocean depths with some places just above freezing. "below about 200 meters (656 feet) depth, ocean waters have an average temperature of only 4°C (39°F)."
3. The extreme ocean pressure.
This Deep water fish was named the ugliest animal.
The Blob Fish.
Coral are consist of tiny soft bodied _________, that share a symbiotic relationship with __________ which gives it its color and helps provide some of this food.
Coral polyps, algae.
What are some ways that deep sea creatures have adapted to life in the extreme conditions of the deep sea?
Soft bodies to handle the pressure, very large eyes and bioluminescence to handle the dark, slow movement, few and small bones, hold very little gas in their bodies.
Many Midnight zone creatures use ____________ to create their own light.
Bioluminescence.
The twilight zone is part of one of the largest migrations on earth. Can you explain this migration?
A large number of ocean creatures make their way from the deep twilight zone to the surface for food every single night, and then back down to the depths before the sun is up.
How deep is the deepest part of the ocean?
The deepest part of the ocean is called the Challenger Deep and is approximately 10,935 meters (35,876 feet) deep.
Different things deep water sea creatures use bioluminescence for.
To attract prey, to communicate, self-defense, to attract a mate