• Views from Penobscot Mountain summit.

    Acadia

    National Park Maine

There are park alerts in effect.
show Alerts »
  • Trail Closures: Peregrine Falcon Nesting

    Precipice Cliff, Valley Cove, and Jordan Cliff areas are closed to all public entry until further notice for peregrine falcon nesting season. More »

  • Cultural Connections programs rescheduled for 7/16/2014 due to weather

    Ash Log Pounding demo will take place today 11 am-3 pm at the Abbe Museum downtown (26 Mount Desert St, Bar Harbor). The Burnurwurbskek Singers have been rescheduled to perform on Cadillac Summit next Wed, July 23 at 11 am.

Field Guide to Marine Invertebrates - Other

Bright green sponge on rock
Halichondria panicea (sponge)
Halichondria panicea ("crumb-of-bread sponge") is green due to symbiotic green algae called zoochlorellae that live within the sponge. When the zoochlorellae are absent, the sea sponge is orange. This sponge is a filter feeder found in subtidal and lower intertidal zones.
 
Red anemone attached to rock under water
Urticina felina (cnidarian)
Urticina felina ("northern red anemone") is sessile (permanently attached to the substrate). This sea anemone uses its tentacles to gather nearby food particles. It is common in the subtidal zone, but can be found in cracks and tidepools in the lower intertidal zone of rocky shores.
 
Photo by Sarah Hall.

Did You Know?

A Passamaquoddy birchbark basket with the image of a moose on it

The Passamaquoddy Kit is an educational tool for teachers to help teach students about Passamaquoddy culture in Maine. The kit is a collaboration between the Abbe Museum and Acadia National Park staff.