CO2: 425.38 ppmCBS News climate producer Chris Spinder got into the water as sharks circled below. In this producer's notebook, he shares what he learned after a minor, but bloody, injury.
More than 100 nations, including the United States, have agreed to protect 30% of the world's oceans by 2030.
Experts believe staying close to the shore helps sharks avoid predators while aiding growth.
The White House said initial estimates show the country is meeting a key marine conservation goal as ocean advocates warn against including areas where fishing is allowed.
International study finds conservation measures improve biodiversity or slow its loss in majority of cases