There are a number of great organizations doing important works for sharks and the oceans (as well as other nature-based interests in some cases) - many of whom depend on generous charitable support.
If you don't already (because you're an awesome person), please consider a donation to any of these fine folks (links on my links page coming.....):
NRDC (Natural Resources Defense Council)
Shark Safe Network
Save Our Seas (S.O.S.)
The Shark Trust
IFAW (International Fund for Animal Welfare)
Save the Blue
Shark Research Institute
Please also check with Charity Navigator to see how your favorite charities compare.....