There is an earnest effort to protect sea turtles & their eggs in Vallarta. Props to the hotels and condo communities that are helping make this happen:
CasaMagna Marriott Puerto Vallarta Resort
The Westin Resort & Spa, Vacation Internationale Hotel
Playas Gemelas Condominiums
Presidente InterContinental Hotel
Check out http://www.vallartanature.org/seaturtles.html for more info.