The noise level beneath the surface of the Strait of Gibraltar is comparable to standing next to a vacuum cleaner. The noise from maritime traffic affects marine life. A study shows that the pilot whales in the strait raise their voices to try to drown out the constant noise.
They are extraordinary biodiversity hotspots. They absorb large amounts of CO2 and release oxygen. They fix nitrogen and detoxify the water. They are nurseries for fish and hundreds of marine organisms. But they are disappearing globally and one-third of the Earth’s coastline is affected.
