🌊 Ocean Zones
About 1 meter = ____ feet.
What is 3.28 feet?
The production of light by a living organism through a chemical reaction.
What is bioluminescence?
This animal can change its color AND skin texture in seconds to disappear into its surroundings.
What is an Octopus?
About how much of Earth's surface is covered by ocean:
About 71% (+/- 2%)
I'm a mammal, breathe air, live entirely at sea, and use echolocation to hunt and navigate.
What is a Dolphin / toothed whale?
Put these in order from shallowest to deepest: Bathypelagic, Epipelagic, Mesopelagic.
Epipelagic → Mesopelagic → Bathypelagic
Bioluminescence is different from this phenomenon, where an organism absorbs incoming light and re-emits it.
What is fluorescence?
This fish shoots jets of water to knock prey from branches above the water.
What is an archerfish?
How many oceans are officially recognized on Earth?
What is five oceans?
I look like a plant, but I'm an animal. Thousands of tiny polyps can work together to build enormous reefs.
What is Coral?
This zone is nicknamed the Twilight Zone because only faint sunlight reaches it.
What is the mesopelagic zone?
True or false: All bioluminescence is blue.
False — bioluminescence can occur in other colors.
A fish blends into its surroundings so predators have trouble seeing it. What type of adaptation is this?
What is camouflage?
At sea level, Earth's atmosphere is already pressing on us with about how many pounds per square inch?
14.7 psi
I drift through the ocean, have no brain, heart, or bones—and my lineage has existed for hundreds of millions of years
What is a Jellyfish?
🌊 This is the uppermost pelagic zone, where sunlight is strongest.
What is the epipelagic zone?
Why is blue/blue-green bioluminescence especially common in the ocean?
Those wavelengths travel especially well through seawater.
This fish carries its own “fishing rod”—with a glowing lure used to attract prey in darkness.
What is a Deep-sea anglerfish?
Which ocean is the largest AND deepest on Earth?
Where is the Pacific Ocea?
This marine predator can detect tiny electrical signals produced by other animals—even when prey is hidden beneath the sand.
Tiny electrical signals can reveal hidden prey to this marine predator—even beneath the sand.
Name all five pelagic zones from shallowest to deepest.
Epipelagic → Mesopelagic → Bathypelagic → Abyssopelagic → Hadalpelagic
In many bioluminescent systems, what are the light-producing molecule and the enzyme called?
Luciferin + luciferase
Mount Everest is 8,849 m tall. The Mariana Trench reaches nearly 11,000 m deep. About how much deeper is the trench than Everest is tall?
About 2,000 m / 6,500 ft of water.
For approximately every 10 m / 33 ft you descend in seawater, pressure increases by about how much?
+1 atmosphere ≈ +14.7 psi
I look a lot like a dolphin, but I’m usually smaller, have a rounder face with no long beak, and have spade-shaped teeth. What am I?
What is a Porpoise? 🐬