TED-Ed: Could underwater farms help fight climate change? - Ayana Elizabeth Johnson and Megan Davis

Seafood is a crucial protein source for billions, but overfishing and unsustainable aquaculture practices pose significant challenges. While traditional methods like net pens and coastal ponds cause environmental harm, innovative solutions such as land-based systems and restorative ocean farming offer hope. By focusing on low-impact species like shellfish and seaweed, we can improve water quality, combat climate change, and support sustainable diets. These methods promise a sustainable future for aquaculture, benefiting both the environment and coastal communities.

What percentage of wild fisheries are currently overfished according to recent studies?

• 10%

• 33%

• 75%

• 50%

What is a major environmental issue associated with net pen aquaculture?

• Increased biodiversity

• Improved fish health

• Reduction in water pollution

• Spread of diseases to wild species

What is a significant challenge faced by land-based aquaculture systems?

• High levels of fish escapes

• Lack of water filtration

• Overreliance on fishmeal

• Inability to control temperature

What is a key benefit of farming shellfish and seaweeds in aquaculture?

• They require extensive feeding

• They increase ocean acidification

• They naturally improve water quality

• They have a high carbon footprint

How much seaweed can be produced in 4,000 square meters of ocean in five months?

• 100 tons

• 50 tons

• 25 tons

• 10 tons