Voyage to the Deep

Science

A production and emission of light by a living organism

Bioluminescence

A production and emission of light by a living organism. Bioluminescence is when a living creature glows naturally like a firefly or some deep-sea fish.

An instrument used to measure the conductivity, temperature and pressure of seawater

CTD device

An instrument used to measure the conductivity, temperature and pressure of seawater. CTD device. A CTD device is a tool scientists use to study seawater by measuring its saltiness, heat, and depth pressure.

An emission of light by a substance that has absorbed light

Fluorescence

An emission of light by a substance that has absorbed light. Fluorescence. In simple terms, fluorescence is when something glows after it absorbs light or other electromagnetic radiation.

The system of all world's ocean currents

Global conveyor belt

The system of all world's ocean currents. Global conveyor belt. The global conveyor belt is a continuous loop of ocean currents that circulate warm and cold water around the planet, influencing climate and weather patterns.

The upper ocean with sunlight

Photic zone

The upper ocean with sunlight. photic zone. The photic zone is the top layer of the ocean where sunlight penetrates, enabling photosynthesis.

Force exerted per unit area

Pressure

Force exerted per unit area. Pressure. Pressure is how much force is applied on a certain area.

A thin layer in a fluid in which temperature changes more drastically with depth

Thermocline

A thin layer in a fluid in which temperature changes more drastically with depth. Thermocline. The thermocline is the layer in a body of water where the temperature changes quickly with depth.

A part of the large-scale ocean circulation that is driven by global density gradients

Thermohaline circulation

A part of the large-scale ocean circulation that is driven by global density gradients. Thermohaline circulation. It is the movement of ocean water caused by differences in temperature and salt levels, which helps regulate Earth's climate.

The vertical movement of cold water from the deep ocean to the surface

Upwelling

The vertical movement of cold water from the deep ocean to the surface. Upwelling. This process brings nutrients from the deep ocean to the surface, supporting marine life growth.