Exploring the Mariana Trench

What is the primary material that amphipods in the Mariana Trench use to build their protective armor?

• Silicon

• Calcium carbonate

• Iron

• Aluminum

Which of the following adaptations helps the Mariana snailfish survive the extreme pressure of the trench?

• Sharp teeth

• Large eyes

• Flexible bones

• Thick scales

What is a xenophyophore?

• A type of coral

• A crustacean with a hard shell

• A type of deep-sea fish

• A large single-celled organism

What surprising discovery was made in the Mariana Trench in 1998?

• A sunken ship

• A plastic bag

• A new species of fish

• A giant squid

What have researchers found inside the stomachs of amphipods in the Challenger Deep?

• Sand

• Microplastics

• Small fish

• Algae