Firstly, note that some of the best parts of Palawan can be found under the sea, so you might feel like you are spending more time in the water than on dry land. Therefore, before your trip, purchasing swim fins, a snorkel set, and a thin wetsuit top or rashguard to protect your skin from the sun is a good idea. You'll also want to stock up on reef-safe sunscreen. Moreover, you might want to invest in an underwater phone case or disposable underwater camera. The snorkeling here is indescribable, and photos will never do it justice; however, taking a few photos will preserve your memories (and make your friends jealous back at home)!