Seagrasses are marine flowering plants that live in shallow coastal waters and often form large meadows in sheltered coastal bays and estuaries. In Atlantic Canada, the dominant seagrass species is eelgrass (Zostera marina), which forms extensive meadows in shallow and sheltered areas with a soft (i.e., sandy or muddy) bottom. Eelgrass beds play a vital role in promoting ecosystem health and increasing species richness. They serve as nursery habitats for important aquatic species like cod and American eel, help fight climate change by sequestering carbon in sediments, and help protect coastlines from erosion. Unfortunately, seagrasses have been declining globally since the late 1800s due to a variety of natural and human impacts. In western Newfoundland, relatively little work has been done to map, monitor, and study eelgrass meadows and the marine life they support. As a result, our understanding of the health of these habitats is limited. Since 2022, we have been using various research techniques to identify locations where eelgrass meadows exist and to collect imagery and data that allow us to evaluate their health. At the same time, we collect data on temperature, depth and salinity to better understand the conditions in which eelgrass thrives and where it may be stressed or in decline. We also collect information on the density and distribution of the European green crab (Carcinus maenas), which is an aquatic invasive species that can degrade eelgrass meadows by damaging roots and rhizomes (the underground parts of the plant) while searching for clams and other invertebrates to feed on. Together, this research will help us make recommendations for conservation and management measures to help keep these habitats intact and support marine life and coastal communities for the long term.