JoinMIT Sea Grant marine research scientist Carolina Bastidas and marine citizen scientist Peter Fifield to become a citizen scientist for this project at one of the most bio-diverse locations along Quincy’s 27-mile long shoreline. Participants will: Downloadthe iNaturalist app and use yourphone’s camera, as the website says, “Have nature at your fingertips.” Help execute a protocol to determine the relative abundance of two species of oysters. Utilize the iNaturalist app on hers or his smart phone to investigate the biodiversity of the area. Teachers and other interested adults are welcome to join us. Parking is available on the street or in the unmarked (Nickerson American Legion Post) parking lot off of Moon Island Road at the end of Dorchester Street. Dress like you are going to a beach in early spring. Getting your feet wet is optional. Rain date: The monthly Environmental Treasures program will be doing a similar iNaturalistCity Nature Challenge: Boston on Saturday April 28 at 4:30 p.m. at OrchardBeach. Meet at the intersection of Huckins Ave. and Bayside Road.