Channel Islands National Park

Just off the crowded coast of southern California, yet somehow a world apart, the Channel Islands are five rugged islands that time and development largely forgot. Because they have been cut off from the mainland for so long, evolution has taken its own course here, producing plants and animals found nowhere else on Earth, from the diminutive island fox to unique flowering plants. It is this concentration of endemic life that earned the archipelago its nickname, the Galapagos of North America.

Sea, cliffs and endemic wildlife

The islands rise steep and treeless from cold, nutrient-rich water, ringed by sea caves, kelp forests and some of the healthiest marine life on the west coast. There are no roads, no shops and no crowds; you arrive by boat from Ventura and step into a landscape of wind, cliff and ocean. Above the water, migrating whales pass offshore and seabirds nest on the ledges; below it, the kelp forests shelter an astonishing density of fish and invertebrates. For a UK family used to accessible coastline, the sheer wildness and quiet of these islands is startling.

You come to the Channel Islands to feel genuinely off-grid within sight of one of the busiest coastlines on the planet. The crossing itself sets the tone: an hour or so on the water, often with dolphins riding the bow wave and, in season, the huge dark shapes of whales surfacing offshore. By the time you land, the mainland feels like another life.

Then it is just you, the wind and the cliffs. Teenagers who might roll their eyes at a museum will happily spend a day sea-kayaking into echoing sea caves, snorkelling in the kelp or scrambling up a headland to watch the light change over the Pacific. There are no distractions, no signal and no crowds, which is precisely the point. It is adventure in its simplest, most memorable form.

Once you are on an island, there are no vehicles, roads or shuttles of any kind; you get around entirely on foot, by kayak or by small boat. Each island is explored via a network of hiking trails ranging from gentle coastal paths to steep, exposed climbs, and distances are modest but the terrain can be demanding. Kayaking is the classic way to reach the sea caves that riddle the coastline. Because the islands are separate, you cannot travel between them without returning to the mainland and taking a different boat. Plan to focus on one island per visit. Everything you carry ashore must come back with you, as there are no facilities to resupply.

There is no public transport to the park and none on the islands. The only access is by the concession boats from Ventura Harbor or, for some islands, a small air service. To reach the harbour itself, a family of five is far better served by a hire car than by patchy regional transit, which would make the tight ferry timings hard to meet. Collect a car at the airport, drive to Ventura, and treat the boat crossing as the true gateway. For a group your size, the flexibility and luggage space of your own vehicle make the whole trip far smoother.

• Book your Island Packers boat crossing well ahead, especially for summer weekends; the ferries fill up and the park is only reachable by sea or air.
• Santa Cruz Island is the easiest first visit, with the shortest crossing and the best mix of hiking, kayaking and wildlife.
• Bring absolutely everything you need: there are no shops, cafes or drinking water on most islands, so pack food, water and layers.
• Sea conditions can make crossings rough; take motion-sickness precautions if anyone in the family is prone to it.
• A guided sea-cave kayak tour is the standout experience for teens and worth pre-booking.
• Day trips are easy, but a night camping under genuinely dark skies is unforgettable if you are prepared.
• Watch for the tame, curious island foxes, but never feed them.

The islands enjoy a mild Mediterranean-style climate, but the ocean and wind shape everything. Summers are warm and dry, though morning fog and stiff sea breezes are common; winters are cooler and wetter, with rougher crossings. Water temperatures stay bracing year-round, so a wetsuit is wise for kayaking or snorkelling. Whatever the season, pack layers: a windproof jacket, sun protection, a hat and sturdy footwear are essential, as conditions can swing from foggy and cold to bright and hot within hours. There is no shelter or shade on much of the terrain, so plan for full exposure.

From the UK, fly into Los Angeles International (LAX) or, for a shorter onward drive, Santa Barbara (SBA), both reachable with a single connection or, in the case of LAX, direct from London. From either airport you drive to Ventura Harbor, roughly 30 to 90 minutes depending on your starting point and traffic, where the concession boats to the islands depart. There is no way to reach the park without this sea crossing, so plan your itinerary around the ferry timetable and book crossings in advance. A hire car is the sensible way to reach Ventura and to explore the wider California coast either side of your island day. Allow a full day for the round trip to any single island.