#OceanRunnerNH: The secret behind sea glass

Posted on August 23, 2016

Ocean Runner Nichole looks to Seacoast Science Center’s Heidi Duncanson to learn the secrets behind sea glass. As pieces of glass are “weathered” physically, by being tossed at sea, and chemically, by sea water, this marine debris is transformed into what some people consider treasures of the sea. It can take 20-50 years for a piece of glass to acquire the desirable, smooth, frosted characteristic.

Follow the Ocean Runner as she runs along the coast of New Hampshire and Southern Maine to raise awareness of our ocean environment and promote ocean health. Filled with questions about what she sees along the way, the Ocean Runner looks to her colleagues at the Center to answer her questions, and yours!

View Previous Post

24th Annual BioBlitz!

Sunday, September 20, 2026 • 7 AM-4PM

Join us at Odiorne Point State Park to discover the incredible diversity of species found along our Seacoast. All ages and experience levels are welcome!

CLOSING EARLY: THURSDAY, May 22, 2025. Due to anticipated high winds, we will be closing at 3pm today, to prioritize the safety of visitors, volunteers & staff. Stay safe.

Update: Tuesday, July 7, 2026

Planning to visit today?

It’s a good idea to reserve online, especially with rain forecasted, as rainy summer days often find us at capacity, particularly in the morning, with walk-ins depending on availability. Book tickets here. 

Seacoast Science Center

Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognizing you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.