Planet Earth: Ocean Deep

Front

What is the aphotic zone?

Back

The aphotic zone is the layer of the ocean where sunlight does not penetrate, typically starting at depths of around 500 meters.

Front

What adaptations do marine organisms have for hunting food?

Back

Marine organisms have various adaptations, such as bioluminescence, specialized hunting techniques, and physical features that help them capture prey efficiently.

Front

What is marine snow?

Back

Marine snow refers to the continuous shower of organic material falling from the upper layers of the ocean, providing a food source for organisms in the deep sea.

Front

How do dolphins use social behavior to find food?

Back

Dolphins travel in pods and use cooperative hunting strategies to herd fish to the surface, making it easier to catch them.

Front

What is the significance of plankton in ocean ecosystems?

Back

Plankton forms the base of the marine food web, serving as a primary food source for many marine animals.

Front

What is the role of marine bacteria in the ocean?

Back

Marine bacteria decompose organic matter and recycle nutrients, playing a crucial role in the ocean's nutrient cycles.

Front

What is the difference between zooplankton and phytoplankton?

Back

Zooplankton are small, often microscopic animals that drift in the ocean, while phytoplankton are microscopic plants that perform photosynthesis.

Front

Why do some fish have bioluminescent features?

Back

Some fish have bioluminescent features to attract prey, communicate with others, or evade predators in the dark ocean depths.

Front

What is the importance of the ocean's thermocline?

Back

The thermocline is a layer in the ocean where temperature changes rapidly with depth, affecting marine life distribution and behavior.

Front

How does ocean depth affect light penetration?

Back

Light penetration decreases with ocean depth, with most light absorbed within the first 200 meters, affecting photosynthesis and marine life.