In December, 2013, I took a guided tour of the Samana peninula. It began in the town of Samana, stopped on the coast at the area known as the Mouth of the Devil due to the waves that create blowholes, and ended up at Playa de Rincon.
I believe you can watch these 53 photos as an automated slideshow if you click on the third icon from the right on the bottom toolbar. To see some or all of them, click here.