With plastic pollution in the world's oceans getting more and more dire with each passing year, some economic researchers are wondering whether it would be worth setting up some kind of "global fund" to help developing countries pay the cost of improving their waste management systems.
While 2016 saw a sizeable number of corals in Australia's Great Barrier Reef die off due to higher ocean temperatures, other corals in that same ecosystem survived, and scientists now think they have a handle on why.
Twelve of the world's most celebrated underwater photographers have been united in support of Bite-Back Shark & Marine Conservation, a UK charity, and each donated an image and commentary to create a stunning 2019 calendar.
With coral populations dying off at alarming rates, one scientist has figured out a way to accelerate their growth, potentially giving them a new lease on life.
Diving with sharks is a strong draw for divers. A study of the Florida dive industry by Oceana showed that in 2016, divers spent $221 million for shark encounters. That was just in the state of Florida.