It was so easy to book this Humboldt Penguin Tour with Ecoturismo agency. You can contact them by phone and they send you all the necessary info by whatsapp/email. Very reactive and useful. Did not have to pay in avdance to book the tour, which was awsome since I arrived at La Serena late at night the day before the tour and did not want to waste time. Spent a great day with Felipe Torres, our Ecoturismo guide for the day, at Choros and Damas Island, with very useful and interesting informations shared the whole day long. Since it's winter time (nesting and migration period), the fauna is seen in fewer numbers. But fortunately we had the opportunity to see a variety of fauna: sea lions, pelican, penguins, bottlenose dolphins, piqueros etc. Very nice experience I do recommend. Felipe was really nice to share with some photos he took with his Iphone:-)