Carriage Roads to reopen
All park carriage roads will reopen to foot traffic only on Friday, 4/25. Bikes & horses are not permitted at this time to prevent damage during the spring thaw. Use caution as seasonal repairs are not completed. For more info: 207-288-3338.
Trail Closures: Peregrine Falcon Nesting
Precipice Cliff and Valley Cove areas are closed to all public entry until further notice for peregrine falcon nesting season. More »
Blackwoods Campground is open
Blackwoods Campground is open and is sites are available by self-registration at the campground. More »
2014 Season Openings
Park Loop Rd, Cadillac Mountain Rd, & Hulls Cove Visitor Center is open. Call (207) 288-3338 or follow us on Facebook (www.facebook.com/AcadiaNPS) for more information More »
Jordan Pond boat ramp parking lot is closed for construction
It's scheduled to reopen on June 28. There may be intermittent openings at the discretion of the contractor. The North Lot parking area will remain open for access to the Jordan Pond House Restaurant & hiking & biking trails.
Field Guide to Marine Invertebrates - Arthropods - Crustaceans
Cancer borealis ("Jonah crab") is found in the mid- to lower intertidal zone under algae and among rocks. This predator eats blue mussels and other invertebrates. The remains of this crab are often found in the upper intertidal zone, evidence of bird predation.
Carcinus maenas ("green crab") is found under algae and small rocks, and it eats other invertebrates in the mid- to lower intertidal zones. This crab is native to Europe and is an invasive species. The green crab is smaller than the Jonah crab.
Homarus americanus ("American lobster") is a bottom-dwelling predator and scavenger. The American lobster is found throughout the Gulf of Maine, where it is commercially important. The lobster is found in rocky, subtidal habitats but, rarely, can be observed in lower intertidal pools.
This herbivorous crustacean, an isopod, feeds on a variety of algae including large rockweeds (Ascophyllum, Fucus). It is common in the mid- and lower intertidal zones but is hard to see because its color usually matches the algae it is feeding on. This behavior helps it resist predation by fish. Individuals vary in color from yellow to brown to deep burgundy.
All photos by Sarah Hall, except for American lobster (NPS/Todd Edgar photo).
Did You Know?
The Guide's Guide to Acadia National Park, originally created to share important information about the park's facilities and natural and cultural resources with commercial guides, is available to the public on this website. The guide contains everything you would want to know about the park. More...