service is usually seasonal and offered by private business. San Juan Cruises offers charter service to Eliza Island, Sinclair Island, Blakely Island, Orcas Island, Lopez Island and daily seasonal service to San Juan Island from the Bellingham Cruise Terminal in Bellingham, Washington. North Shore Charters provides high-speed water taxi service to all of the main San Juan Islands. Air Air service to the San Juan Islands is provided by the following: Kenmore Air (to and from Roche Harbor, Orcas Island, Seattle/Boeing Field, Seattle/Lake Union) San Juan Airlines (to and from Anacortes, Bellingham, Eastsound (Orcas Island), Lopez Island, Blakely, Decatur). They merged with Northwest Sky Ferry, an inter-island carrier serving Bellingham, Anacortes, Friday and Roche Harbors (San Juan Island), Eastsound (Orcas Island) and Lopez, Waldron, Shaw, Stuart, Blakely, Center, Crane, Decatur and Eliza Islands, as well as Seattle. Friday Harbor Seaplanes (to and from Renton Municipal Airport/Lake Washington, Friday Harbor and Roche Harbor) Shipping The San Juan Islands are surrounded by major shipping channels. Haro Strait, along with Boundary Pass, is the westernmost and most heavily used channel connecting the Strait of Juan de Fuca and the Strait of Georgia. It is the main route connecting the Port of Vancouver and other ports around the Strait of Georgia with the Pacific Ocean. Haro Strait joins Boundary Pass at Turn Point on Stuart Island, where a major navigation beacon, Turn Point Light, is located. Strong, dangerous rip tides occur near Turn Point, as well as near the northern end of Boundary Pass, between Patos Island Light on Patos Island and East Point on Saturna Island. Rosario Strait is also a major shipping channel. More than 500 oil tankers pass through the strait each year, to and from the Cherry Point Refinery and refineries near Anacortes. The strait is in constant use by vessels bound for Cherry Point, Bellingham, Anacortes, and the San Juan Islands. Vessels bound for British Columbia or Alaska also frequently use it in preference to the passages farther west, when greater advantage can be taken of the tidal currents. List of islands This list includes only those islands that are part of San Juan County as defined by the USGS, bounded by the Strait of Juan de Fuca, Haro Strait, Rosario Strait, Boundary Pass, and the Strait of Georgia. 2016 populations estimates for inhabited islands are in parentheses, though some have major seasonal changes. Islands protected as state parks