The Carbon Impact of the World’s Largest Mass Migration

What is the twilight zone in the ocean?

• A region with enough light for photosynthesis

• A region with no light at all

• A region with enough light to see but not for photosynthesis

• A region with abundant plant life

Why do animals in the twilight zone migrate to the surface at night?

• To avoid surface predators

• To escape the cold temperatures

• To find mates

• To feed on surface organisms

What is diel vertical migration?

• A seasonal migration of marine animals

• A daily movement of animals from the twilight zone to the surface

• A migration of birds across continents

• A movement of fish to deeper waters during the day

How does diel vertical migration contribute to carbon sequestration?

• By increasing the oxygen levels in the ocean

• By trapping carbon in the deep sea

• By reducing the number of predators

• By releasing carbon into the atmosphere

What was the impact of including diel vertical migration in carbon models according to a 2019 study?

• Carbon emissions decreased by 14%

• Carbon sequestration decreased by 14%

• Carbon sequestration increased by 14%

• Carbon emissions increased by 14%