NJ has a free saltwater registry program for all people, senior or not resident or not...
Saw these 2 entries on NJ Fish/Wildlife website
"A discounted fishing license is available to all residents, age 65 and under 70 years of age. Resident anglers age 70 and over do not require a fishing license or Trout Stamp."
https://dep.nj.gov/njfw/licenses-and-permits/fishing-and-hunting-license-and-permit-information/
"FRESHWATER FISHING
Anyone age 16 and above must have a valid license to fish the fresh waters of New Jersey with a handline, rod and line or bow and arrow. This includes privately owned lakes and other waters. There are also Freshwater Fisheries Permits for such things as stocking private ponds.
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HUNTING AND TRAPPING
Obtaining regular hunting and trapping licenses requires proof of a completed hunter education course or a previous year’s resident license. Licenses need to be purchased at an agent if a record of such documentation is not in the system’s database. The agent will enter the information into the database. Nonresidents ONLY may use the Nonresident License Documentation Form to make hunting and trapping licenses available for purchase.
Once documentation of a previous year’s hunting license or hunter education is entered in the system, licenses can be purchased online and printed at home. Licenses purchased at an agent are printed on durable, waterproof stock. Licenses purchased online can also be printed on durable stock and mailed for an optional $2.00 fee; firearm licenses are always mailed as required by law.
Those without documentation readily available can consider an Apprentice License.
Licenses must be openly displayed in the middle of the back on outer clothing.
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MARINE LICENSES
New Jersey does not have a recreational saltwater license but does require licenses for some activities – see the Marine License Information page.
Note that a Shellfish License and is required for harvesting of all species of benthic mollusks (with the exception of conchs, which are addressed in the commercial marine fisheries regulations), including, but not limited to, hard and soft clams, surf clams, oysters, bay scallops and mussels. See the Shellfish License information section of the Marine License Information page for details."