skip to main content | skip to footer
N.C. Department of Environment and Natural Resources

NC Department of Environment and Natural Resources
Marine Fisheries - Ocean Hard Bottom

Marine Fisheries

Ocean Hard Bottom

Also known as reefs or live bottom.
 

Ecosystem enhancement

Hard bottom provides hard complex vertical structure for attachment of sponges, seaweed, and coral, which in turn support a diverse reef fish community.

Fish use of hard bottom habitat

  • As many as 47 reef fish species inhabit nearshore ocean reefs (less than 60 ft. deep), and twice that number use offshore reefs.  Many more invertebrates and fish also occur there.
  • Hard bottom provides numerous hiding places for small and juvenile reef fish such as gobies, gag, black sea bass, and pigfish.
  • King mackerel forage over the reefs, while adult gag, black sea bass, and snappers  hunt among the structure
  • Many species that live on hard bottom, also spawn there.  Examples include black sea bass, grouper, gobies, and damselfish.
  • Some hard bottom species, such as black sea bass and gag, live in the coastal estuaries as juveniles.

Some important facts

  • The many wrecks off North Carolina (“graveyard of the Atlantic”) now function as hard bottom. The DMF also has an Artificial Reef program that adds new hard bottom areas to the system.
  • More than 90% of the hard bottom off North Carolina occurs south of Cape Lookout, some very close to shore. (See habitat mapping and monitoring).
  • This habitat is also called “live rock” because of the abundance of plants and invertebrates that attach and cover it.

How’s it doing?

Hard bottom locations have been partly mapped but no habitat trends data are available.  It is thought to be in relatively good shape.  See Threats to Habitat Index for more information

See Hard Bottom chapter of CHPP

N.C. Division of Marine Fisheries • 3441 Arendell Street • Morehead City, NC 28557 • 252-726-7021 or 800-682-2632

NCDMF logo

 

 

38337 FEEDBACK

Your input is valuable to us. Please send us your feedback.

What type of feedback would you like to send?*

Ask a Question Report a Problem Have a Concern Make a Comment

(If you would like us to respond please include your phone or e-mail.)

Your Question has been sent. Thank you!

An internal server error prevented Your Question from being sent.
Please try again later, or call Toll-Free (877) 623-6748 for immediate assistance.

Please complete all highlighted items

Your Problem has been sent. Thank you!

An internal server error prevented Your Question from being sent.
Please try again later, or call Toll-Free (877) 623-6748 for immediate assistance.

Please complete all highlighted items

Your Concern has been sent. Thank you!

An internal server error prevented Your Question from being sent.
Please try again later, or call Toll-Free (877) 623-6748 for immediate assistance.

Please complete all highlighted items

Your Comment has been sent. Thank you!

An internal server error prevented Your Question from being sent.
Please try again later, or call Toll-Free (877) 623-6748 for immediate assistance.

Please complete all highlighted items

*If you are a DENR employee with an I.T. issue, please submit a DOTS ticket.