Eco sanctuaries in Ixtapa

Hello everyone! I am trying to organize a vacation for me and my friends in Mexico and we are especially interested to visit Ixtapa. We also prefer eco tourism. Is there someone who can tell us about most popular eco tourism zones in Ixtapa? We will appreciate your help. Thank you very much in advance!

Ixtapa Zihuatanejo – great beaches, wildlife, turtles, crocodiles and reptile watching, fishing, kayaking, camping; Playa la Ropa – iguanas, birds and turtle watching; La Playa Linda – beaches with calm water, camping zone, restaurants, cheap room rental. All places are nice to see. Whatever point you choose you will have a nice time, I am sure!!!