Submersible Operations and Ocean Zones

The video follows Greg Foot on a deep-sea exploration mission aboard the submersible Nomad. Starting from the coast of Bermuda, Greg descends into the ocean, observing marine life and discussing the significance of ocean exploration. The mission, part of the Nekton XL Kaplan Deep Ocean Survey, aims to study ocean currents and map the ocean floor. The video highlights the challenges of deep-sea pressure and the design of submersibles like Nomad. It concludes with the ascent to the surface, reflecting on the mission's importance in understanding the ocean's role in global health.

What is the name of the submersible used in the dive?

• Nautilus

• Nomad

• Nemo

• Neptune

What keeps the submersible buoyant at the surface?

• Propellers

• Main ballast tanks

• Thrusters

• Variable ballast tanks

What is the role of the variable ballast tank?

• To provide propulsion

• To adjust trim

• To store oxygen

• To house equipment

Which ocean zone is known as the twilight area?

• Bathypelagic zone

• Abyssopelagic zone

• Mesopelagic zone

• Epipelagic zone

What is the depth at which the submersible reaches the mesopelagic zone?

• 1000 meters

• 500 meters

• 200 meters

• 100 meters

What is the significance of the ocean in terms of planetary health?

• It is a source of fresh water

• It regulates global temperatures

• It provides renewable energy

• It is a habitat for land animals

How does the pressure change as you dive deeper into the ocean?

• It fluctuates

• It increases

• It remains constant

• It decreases

What shape is the submersible to withstand high pressure?

• Cube

• Cylinder

• Sphere

• Pyramid

What percentage of the ocean floor has been mapped to a resolution of 100 meters?

• 5%

• 10-15%

• 100%

• 50%

What is the main purpose of the Nekton mission?

• To explore coral reefs

• To map the ocean floor

• To measure ocean currents

• To study marine life