Porcupine Islands

Overview

A compact archipelago in Frenchman Bay just off Bar Harbor, the Porcupine Islands are rounded, forested domes that really do look like a line of porcupines crossing the water. Most of the group lies within the park, with Burnt Porcupine privately owned. Their rugged, undeveloped feel is the draw—no docks, no snack bars, just rock, forest, and waves.

What You'll See

Expect dramatic granite cliffs, rocky coves, the occasional sea cave, and cobblestone pockets. The islands’ shapes come from glacial sculpting: gentler slopes to the north and steep, abrupt faces to the south. You’ll get classic views of Mount Desert Island and Bar Harbor from the water, and you can admire the chain from shore (the Bar Harbor waterfront) and from high points like Cadillac.

Best Ways to Experience Them

• Sea kayak: This is the signature way to explore, with guided tours and rentals based in Bar Harbor. Paddlers can nose into coves and along cliffy shorelines when conditions allow.
• Boat tours: Narrated trips circle the islands for scenery and wildlife spotting without the effort (or risk) of paddling.
• On foot at low tide: Bar Island (often grouped with the Porcupines) is reachable via the sandbar from town at low tide—mind the tide window to avoid getting stranded.

Wildlife

The islands are important seabird habitat. Watch for black guillemots, great blue herons, ospreys, bald eagles, and even peregrine falcons. Binoculars pay off. Seals and porpoises are occasional bonuses from the water.

Regulations, Access, and Reality Check

• Seasonal closures: Some islands (notably Sheep and Long) close for nesting, typically until early August. Expect landing restrictions during that period.
• Private property: Burnt Porcupine is private; don’t assume landing is allowed.
• No amenities: There are no restrooms, water, or camping—pack everything you need and plan a day trip only.
• Conditions matter: Wind, tide, and chop can ramp up quickly between islands. Check marine forecasts and know your limits.

Is It Worth It?

If you’re content with views, the waterfront and Cadillac deliver the quintessential scene. If you like being on the water, this is a top-tier paddling and boat-tour destination—peaceful, wild, and far less crowded than the park’s roads despite being right off town.

Best Time to Visit

• For landing/paddling: After nesting closures lift (often early August onward) and during fair weather windows.
• For shore views and photos: Any clear day from the Bar Harbor waterfront or Cadillac works well.
• For the Bar Island walk: Only at low tide, within the short exposure window of the sandbar.