The Atlantic horseshoe crab (Limulus polyphemus) is a keystone species in the Delaware Bay region, supporting multiple ecosystems and industries important to human health and livelihood.

DNREC provides grants for energy efficiency and clean fuel technology, supports energy policy development, and provides coordination and assistance to support sustainable land use and building practices.

Recognizing public health, the environment, and the economy as key components in finding solutions to air pollution, DNREC has made significant progress in adopting effective and publicly-acceptable plans for emissions reductions at the lowest costs to the regulated community.

Delaware is known for having some of the highest-quality beaches in the nation because of our commitment to water cleanliness and shoreline nourishment.

Did you know that any place you stand in the State of Delaware is usually within one mile of a wetland? Approximately 25% of the state today is covered by wetlands, but a lot of wetland area has been lost over time due to land conversion to farms and housing developments, storms, and sea level rise.

Horseshoe crabs are important for many reasons, including their impacts ecologically, medically, and economically.

Delaware's beaches are a major draw in the summertime for people who live in the surrounding areas for vacation and recreational opportunities.

Every year, billions of pounds of trash end up in the world's oceans, even making their way to areas of the earth that are uninhabited by humans.

Citizen science drives a large undertaking in understanding the horseshoe crab population, drawing people from all over the country to help with the spawning survey.

Every year, state, federal, and non-governmental organizations coordinate efforts to conduct a standardized spawning survey at select Delaware Bay beaches.