It's easy to see that Maria Marcovaldi loves sea turtles. Driving her Jeep along the beach at Praia do Forte in northern Brazil, she hits the brakes and suddenly does something surprising. She points with pride to a big 400-room resort hotel intruding upon the sea turtles' habitat. That way the turtles don't get disoriented on their way to the water. The oceans are important for mankind because they cover most of the planet.
Sea turtles are important because they make up part of the marine ecosystem.