Red Crab Invasion

What makes up the largest population of land crab species on Christmas Island?

• Blue crabs

• Red land crabs

• Green crabs

• Yellow crabs

How many red crabs migrate to the ocean each year?

• 50 million

• 80 million

• 120 million

• 150 million

Tags

CCSS.5.NBT.A.2

When does the crab migration begin on Christmas Island?

• January and February

• April and May

• July and August

• October and November

What happens to the roads during the crab migration?

• They become flooded

• They become crab-crossing zones

• They are closed permanently

• They are covered in sand

Tags

CCSS.RI.4.2

CCSS.RI.5.2

CCSS.RI.6.2

CCSS.RL.4.2

CCSS.RL.5.2

What is the main reason for the crabs' migration?

• To find food

• To escape predators

• To reach the ocean

• To find new homes

Tags

CCSS.RI.5.2

CCSS.RI.6.2

CCSS.RL.4.2

CCSS.RL.5.2

CCSS.RL.6.2

What do schools on the island experience during the migration?

• Increased attendance

• Crabs scuttling through hallways

• More outdoor activities

• Less traffic congestion

Tags

CCSS.RI.4.2

CCSS.RI.5.2

CCSS.RI.6.2

CCSS.RL.4.2

CCSS.RL.5.2

What is the main challenge for crabs during their journey?

• Finding food

• Navigating obstacles

• Avoiding predators

• Building shelters

Tags

CCSS.RI.4.2

CCSS.RI.5.2

CCSS.RI.6.2

CCSS.RL.5.2

CCSS.RL.6.2

What is the appearance of the mountain during the migration?

• Snow-covered and serene

• Rocky and barren

• Lush and green

• Covered in mist

Tags

CCSS.RI.4.5

CCSS.RI.5.5

CCSS.RI.6.5

CCSS.RI.7.5

CCSS.RI.8.5

What do female red crabs do after mating near the water?

• Return to higher ground

• Lay eggs immediately

• Wait by the shore to lay their eggs

• Travel back to the forest

How many eggs can each female red crab produce?

• 10,000 eggs

• 50,000 eggs

• 100,000 eggs

• 200,000 eggs

Tags

CCSS.4.NBT.A.2