One of the best things about snorkeling is how little equipment you actually need to have a good time. You'll only need a comfortable set of fins and a properly fitting mask with snorkel. Optional gear includes a underwater GoPro cameras, a thin wetsuit, and some flotation assist devices depending on your needs.
Snorkeling Masks - This is your window to Hawaii's underwater paradise.
Snorkels - They named the activity after it, so you know its important.
Snorkeling Fins - Make it easy on yourself. Be comfortable and swim efficiently.
Sunscreen - This is because you want to enjoy your entire vacation right?
Should I Buy or Rent My Snorkeling Gear? - Find out what's best for you.