European glass eels use internal magnetic compass to navigate waters

The video discusses a study on European eels, revealing their use of an internal magnetic compass to navigate tidal waves during migration. These eels hatch in the Sargasso Sea and travel to Europe's continental slope, undergoing various life stages. A scientific study observed glass eels' response to magnetic fields, suggesting this mechanism aids in navigation when visual cues are absent. This magnetic sense may also guide mature eels back to the Sargasso Sea for spawning.

What unique ability do European eels possess during a certain stage of their development?

• They use an internal magnetic compass.

• They communicate through sound waves.

• They can fly short distances.

• They can change their color at will.

Where do European eels hatch before beginning their migratory journey?

• The Mediterranean Sea

• The Baltic Sea

• The North Sea

• The Sargasso Sea

What is the color of European eels when they reach the adult stage?

• Green

• Yellow

• Red

• Blue

In the study conducted in Norway, what was observed when the magnetic north was rotated?

• The eels turned towards the magnetic direction of the tidal current.

• The eels changed color.

• The eels stopped moving.

• The eels swam in circles.

Why might the magnetic compass be crucial for eels during migration?

• It guides them when visual cues are lost.

• It assists them in avoiding predators.

• It helps them find food.

• It helps them communicate with other eels.