Whaleboat Island

Maine Coast Heritage Trust

The largest wild island in Casco Bay, Whaleboat’s scenic campsites, rocky shoreline, gravel beaches, and expansive meadow invite endless exploration.

A grassy meadow and dense shrubland separate wind-ravaged spruce forest at either end of the island. The island’s uplands are bordered by cobble beaches, fringing salt marsh, ledges, and dramatic cliffs. There are no trails on the island, but hikers can follow the rocky shoreline during low tide.


The island’s former owners protected Whaleboat through the donation of two conservation easements. In 2002, they sold the island to MCHT to ensure it would remain an undeveloped island and be open to the public in perpetuity. Maine Coast Heritage Trust (MCHT) was able to purchase the entire 122-acre island thanks to generous donations from area residents and support from the state’s Land for Maine’s Future program.


Whaleboat Island is located west of Harpswell Neck in Casco Bay. The closest public boat ramp is the Mere Point launch in Brunswick, just over 5 miles to the north-northeast. (Please note that as of June 2021 overnight parking is no longer allowed at Mere Point.) A private boat ramp at the Dolphin Marina in Harpswell is also available, roughly one mile to the southeast.

This island is owned and protected by Maine Coast Heritage Trust. To learn more, visit their website.

Visitor Guidelines

  • Camp at established campsites
    • Limit stay to two nights
    • Use of Northern site by reservation only
    • Groups larger than 10 (Meadow Site) or 6 (North Site) and Commercial Users by permission only. Please call 207-729-7366.
  • Fires by permit only—Maine State Law
    • Visit wardensreport.com for permit
    • Keep all fires below high tide line (with the exception of the fire pit at the northern campsite)
    • Do not cut or break tree limbs, dead or alive
    • Leave no fire unattended
    • Completely extinguish all fires
  • Carry out all trash, including human and pet waste and toilet paper
  • Keep pets under control

Download a map

map of whaleboat island

Map courtesy of MCHT