These Crabs Have Been Crawling Before the Dinosaurs

The video discusses the American Horseshoe Crab, a species that has existed for over 200 million years. Found along the Atlantic coast of North America, these crabs spend most of their time in shallow waters but come ashore to mate. They have a unique anatomy with ten eyes and are harvested for their blood, which is crucial in preventing global illnesses. However, due to habitat development and over-harvesting, their numbers have declined, making them a vulnerable species.

How long have American Horseshoe Crabs existed on Earth?

• 300 million years

• 200 million years

• 100 million years

• 50 million years

Where do American Horseshoe Crabs primarily spend their time?

• On land

• Shallow waters

• In freshwater lakes

• Deep ocean waters

How many eyes does the American Horseshoe Crab have?

• Two

• Four

• Six

• Ten

What is a significant use of horseshoe crab blood?

• Making jewelry

• Fertilizer

• Preventing global illnesses

• Fuel production

What has caused the decline in the American Horseshoe Crab population?

• Climate change

• Predation by other species

• Habitat development and over-harvesting

• Lack of food