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Photo of a Ocean Quahog

Species profile

Ocean Quahog

Arctica islandica

Clams/oysters/mussels1.0K iNat observations

Identify Ocean Quahog (Arctica islandica) from a photo: try it free in your browser, or get unlimited IDs, no sign-up, with the CatchRules app. Plus current fishing rules across 1 jurisdiction.

At a glance

Ocean Quahog (Arctica islandica) is a bivalve mollusk with specific harvest rules tracked in 1 of 66 jurisdictions covered by CatchRules.

Confirmed by 338 research-grade iNaturalist observations, with Nova Scotia, Massachusetts, and Maine the top jurisdictions by observation count.

Notable details

  • The oldest verified individual, nicknamed 'Ming,' was 507 years old when collected in 2006.
  • Scientists determine their age by counting annual growth rings on the shell, exactly like counting tree rings.
  • Grows very slowly—a 5-inch shell may represent over 100 years of growth.
  • Found across the North Atlantic from Iceland and Norway to the eastern United States.
  • Commercially harvested in large volumes and commonly used in clam chowder and seafood products.

Background

The ocean quahog (Arctica islandica) is a species of edible clam, a marine bivalve mollusk in the family Arcticidae. This species is native to the North Atlantic Ocean, and it is harvested commercially as a food source. This species is also known by a number of different common names, including Icelandic cyprine, mahogany clam, mahogany quahog, black quahog, and black clam.

Background excerpt adapted from Wikipedia's Ocean Quahog article (CC BY-SA). Visit Wikipedia for the full entry.

Frequently asked questions

What is Ocean Quahog?

Ocean Quahog (Arctica islandica) is a bivalve mollusk with specific harvest rules tracked in 1 of 66 jurisdictions covered by CatchRules.

What is the scientific name for Ocean Quahog?

Ocean Quahog is Arctica islandica.

Is Ocean Quahog regulated for fishing?

Yes — Ocean Quahog has fishing regulations in 1 U.S. state and/or Canadian province tracked by CatchRules. See the "Jurisdictions with rules" section above for the binding-source links.

How can I identify Ocean Quahog?

Take a photo with the free CatchRules app for iPhone or Android — on-device identification recognizes Ocean Quahog along with ~1,500 other species. No sign-up, unlimited use.

Photo credit: iNaturalist / Wikipedia. Identification reference only — verify regulations with the issuing wildlife agency before retaining a catch.