Take a water taxi from Los Muertos Pier to one of the small villages along the bay for a great day trip! Round trip tickets are 380 pesos (~$20) or less depending on your destination. We took a day trip to Yelapa and saw a waterfall, relaxed on the beach and explored the village!
There are a few tour companies you can hire to take you to tour this beautiful national park! Consider the Hidden Beaches tour from Vallarta Adventures to see all the beautiful beaches this park is known for!