Emily Reddington, former director of science and education at the Great Pond Foundation, has been named executive director of the Edgartown nonprofit.

Biologists and environmental groups are monitoring an invasive jellyfish with a painful sting that has spread into Vineyard waters in recent years.

Torrents of rain from recent storms have caused Vineyard Great Ponds to rise to historic levels, threatening shellfish and surrounding homes.

A decomposing North Atlantic right whale carcass recovered from the Edgartown Great Pond Tuesday morning likely died from entanglement with fishing gear, scientists said.

Island authorities must radically cut nitrogen pollution in the Edgartown Great Pond, state officials told a public hearing Wednesday at Edgartown town hall about the final report from the Massachusetts Estuaries Project.

The Massachusetts Department of Environmental Protection held the hearing to discuss the pond’s nitrogen problems and the requirement for a Comprehensive Wastewater Management Plan to limit nitrogen seeping into it.

Nessie is her name. A new dredge for the Edgartown Great Pond was launched on Wednesday afternoon before a crowd of 50 friends and riparian owners around the pond. Nessie will begin her work in November by dredging the bottom and helping to improve circulation in the pond. The first project will involve removing a sandbar that has built up in the pond near the site where it is opened to the sea. Dredging the area is expected to make future openings to the sea stay open for longer periods of time. Other dredging projects will follow.