On the northwest coast of Gran Canaria, there is good snorkeling off Puerto las Nieves especially to the lefthand side of the pier. The waters off Puerto las Nieves are known to have strong currents, so its really for experienced snorkelers. Try not to fight the currents, just drift with them near shore and then swim hard to get back in. There are not many reefs or rocks here, so you can expect to only see parrotfish, lizardfish, octopus and wrasses over the pebble beach waters. While snorkeling on the north coast of Gran Canaria, keep in mind that the current and waves tend to be stronger so exercise caution.
Since the Canary Islands are actually part of Spain, the best way to fly to the islands is through an airport in Spain. There are flights to all of the main Canary Islands directly from one Spanish airport or another. Of course, Madrid offers the best connections. The Aeropuerto de Gran Canaria (LPA) is located southeast of Telde on the east coast of Gran Canaria. Presently, there are not direct flights from the USA to the Canary Islands. Once in the Canary Islands, the best way to go between islands is still by inter-island flights. There are some boat services that do go between the islands as well. TIP: For your safety, most of the Canary Island snorkeling dive sites require snorkelers to have a diver-down flag marker. The waters around the islands are very popular with windsurfers and boaters, which has resulted in some snorkeler deaths over the past few years.
Overall, Puerto Las Nieves is the 9th most popular snorkel dive spot of all 39 snorkeling dives in Canary Islands.