Sediment cores from deep lake bottoms are collected by Environment and Climate Change Canada (ECCC) using a box corer deployed from a ship. Sediment core samples in shallower depths (<9 m) are collected using a glew gravity corer and fishing boat Photo: Anika and Trevor with the glew corer on Lake Ontario.
Mussels are identified using a viewer on the surface of the water. Fish are caught by local northern communities and their stomachs are sent to us for processing. Photo: Alex using a viewer to find mussels in the Thames River, Canada.