polar front

The polar front doesn’t stay in the same place every year.

If they can’t reach this polar front and can’t swim back within about a week, their chicks will starve to death.

Their little chicks fast for more than a week while they forage for fish and krill in the waters of the Antarctic polar front, an upwelling where cold, deep seas mix with more temperate seas.

As the ocean warms a body of water called the Antarctic polar front – an upwelling of nutrient rich sea that supports huge abundance of marine life – is being pushed further south.

The lanternfishes congregate in an ocean region called the polar front, where cold polar water meets the warmer tropical water, creating a sharp temperature gradient.