Kayaking with an ecotour (or on your own), you can watch mullets streaking past like rockets—their underwater trails an Avatar-like shade of blue created by the lagoon’s unique algae.

His findings—along with easy steps you can take to live more like these cultures—can be found in his book, The Blue Zones Secrets for Living Longer: Lessons From the Healthiest Places on Earth.

GARY — The city’s sanitary district is expected to complete closure of the Ralston Street lagoon and begin work on a long-term plan to minimize overflows of wastewater and stormwater into the ...