Northern Shrimp, Other Invertebrates & Marine Plants

Saltwater Marine Fishing Regulations New Hampshire Saltwater Fishing

Finfish and shellfish are not the only species that can be harvested from New Hampshire waters. The following are other species that can be harvested. Licenses may be required. See table below for details.

Invertebrates/Marine Plants


License Requirement


Minimum Length

Daily Bag Limit

Gear Regulations & Special Rules



No closed season


1 quart/day

  • Residents only
  • For personal use only
  • Only handheld tools with handles not to exceed 18 inches

Saltwater License

No closed season



  • Only handheld tools with handles not to exceed 18 inches
Horseshoe Crab

Harvest Permit

No closed season


10/day (either taken or in possession)

  • Refer to Coastal Harvest Section
  • Reporting required
Sea Urchins

Personal use:

By Hand or Pot:
Oct. 1 – March 15

2 inches (longest diameter)


  • Sublegal sea urchins shall be culled immediately after capture and returned immediately to the sea

Saltwater License

By Hand or Pot:
Oct. 1 – March 15

Dec. 15 – March 15

2 inches
(longest diameter)


  • Sublegal sea urchins shall be culled immediately after capture and returned immediately to the sea
  • Helpers working under the Commercial Saltwater License shall not take by diving
  • No possession of other marine species including lobsters, finfish or shellfish if taken by sled
  • Gear: Call Marine Fisheries Division for specific gear regulations — (603) 868-1095


No closed season


3 bushels/day

  • Residents or summer residents only
  • May be taken below the high water mark during daylight hours only
  • Do not detach or injure the holdfasts of the seaweed when cutting
  • Owner’s permission is required to take flats-weed or seaweed from saltmarsh or flats
  • No seaweed may be piled below the high water mark to be hauled away
  • Sale is prohibited outside the state
Northern Shrimp Call Marine Fisheries Division for current rules — (603) 868-1095 or see Marine Fishing Rules Fis 607.01 at nh.gov

Striped Bass Volunteer Angler Survey — Join Us!

Do you like to fish for striped bass in N.H.? Tell N.H. Fish and Game’s Marine Division about your striped bass fishing — and you could win a great prize!

For the Striped Bass Volunteer Angler Survey, anglers are asked to provide information such as amount of time fished and length of fish caught. Completed trip logs may be sent by mail, or an electronic logbook can be filled out online at fishnh.com/surveys/striped-bass.html. Marine fisheries biologists use the results to assess the status of striped bass populations each year.

How do I get started? Contact the Marine Division at Reg3@wildlife.nh.gov or (603) 868-1095 to get your logbook by mail or e-mail. Submit your logs by November 1, for a chance to win a framed print of “Shadow” by Victor E. Young, donated by the Coastal Conservation Association of N.H. and a saltwater rod & reel donated by Kittery Trading Post. Thanks for your help!

Jonah vs. Atlantic Rock Crabs

Jonah crab
(Cancer borealis)

  • Front edge of carapace is jagged with undefined “teeth” (Jonah = jagged)
  • Local name “Jonah crab”
  • Less aggressive when handled
  • Larger than rock crabs (carapace width up to 7 inches)

Atlantic rock crab
(Cancer irroratus)

  • Front edge of carapace has smooth defined “teeth”
  • Local names include “sand” crab or “peekytoe”
  • More aggressive when handled
  • Smaller than Jonah crabs (carapace width up to 5 inches)

Wildlife & Sport Fish Restoration:
75 Years of Restoring, Managing and Researching Fish and Wildlife

Our thanks to hunters, shooters, anglers, boaters and our industry partners! With the purchase of firearms and ammunition, archery equipment, fishing equipment, and motorboat fuels, hunters, anglers and manufacturers pay excise taxes that are distributed to state fish and wildlife agencies for approved projects.

The U.S. Fish and Wildlife Service joins state fish and wildlife agencies, private industry and the public in a partnership to conserve fish and wildlife resources.

With help from over $150 million in federal aid funding over nearly three quarters of a century, N.H. Fish and Game has been able to:

  • Gain knowledge through research
  • Manage fish and wildlife populations
  • Acquire Wildlife Management Areas
  • Improve and protect aquatic habitat
  • Restore fish and wildlife populations
  • Conduct Hunter and Aquatic Education programs
  • Construct, upgrade and maintain more than 140 public access sites for boating and fishing.

Your purchase of hunting and fishing equipment and motorboat fuels supports wildlife and sport fish restoration and boating access facilities.