Red Crab Life Cycle and Migration

The video describes the life cycle of red crabs, focusing on their perilous journey from eggs to larvae in the Indian Ocean. Most larvae are lost to ocean currents or predators, but occasionally, favorable conditions allow for a mass migration back to their birthplace. Guided by instinct, these crabs overcome challenges, including predation by yellow crazy ants, to complete their life cycle.

What happens to the red crab eggs during the first three weeks?

• They remain on the beach.

• They are eaten by birds.

• They drift in the ocean and transform into larvae.

• They hatch and immediately return to land.

What is a significant challenge faced by the larvae in the ocean?

• Strong ocean currents and predators.

• Lack of food.

• Cold water temperatures.

• Pollution.

What unique event occurs once or twice every decade for the red crabs?

• They migrate to a new island.

• They stop migrating.

• They change color.

• A large number of larvae successfully return to their birthplace.

How do the young crabs find their way back to their birthplace?

• They follow their parents.

• They use the stars for navigation.

• They are guided by instincts in their DNA.

• They use landmarks.

What is a major threat to the young crabs during their migration?

• Yellow crazy ants.

• Lack of food.

• Extreme weather conditions.

• Human interference.