Where's the best snorkeling around Zihua??

The best snorkeling is off of Playa Manzanillo. The water is clear and the waves are gentle. Many excursions go there, Picante being a favorite of many. Don’t cheap on the gear unless you like the taste of salt water. It’s worth renting high quality fins and mask. As others have posted Playa Coral at Isla Ixtapa is also a good choice but it gets pretty cloudy and the coral can be very close to the water surface making it a real challenge depending on the tide.