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The Monofilament Recovery and Recycling Program

Monofilament is not biodegradable, and it is a serious threat to the marine environment. Learn what this program does to reduce monofilament damage and preserve marine life in the state.


The Monofilament Recovery and Recycling Program (MRRP) recycles used monofilament into fish habitats. This promotes plant growth and attracts fish populations. MRRP strives to take harmful monofilament and recycle it into something productive.

Monofilament facts

  • Monofilament¬†is fishing line made from a single fiber of plastic.
  • MRRP was created by the Berkley Conservation Institute (BCI)
  • MRRP has recycled over 9 million miles of monofilament since 1990.
  • Monofilament can suffocate or drown marine life such as:
    • Fish
    • Crustaceans
    • Whales
    • Dolphins
    • Seals
    • Turtles
    • Various birds
  • Boaters can also have their propellers damaged by monofilament line wrapped around it.

Additional Resources for Monofilament facts

Properly dispose of monofilament

The program works to coordinate volunteers to empty these bins and bring monofilament to an indoor recycling station. Monofilament is then shipped to BCI where they use the material to make fish habitats.

Keep a small container on your boat to store monofilament until you can place it in a recycling bin. You can use tennis containers or coffee cans, for examples. There are monofilament recycling containers at our New Bedford and Gloucester facilities.

Look for recovery bins in high-traffic fishing areas in the state. You can also make your own recovery bin for your favorite fishing spot. DMF is compiling a list of recovery bin locations.


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