From 1-13 March, Natural Resources Canada and Ocean Networks Canada (ONC) embarked on the annual spring expedition aboard CCGS John P. Tully to maintain infrastructure at observatory sites in the southern Salish Sea and offshore locations at Folger Deep and Barkley Canyon.

These maintenance expeditions allow for a hands-on approach—remotely operated vehicle (ROVs) hands, that is—to ensure things are running smoothly on the underwater networks, to deploy new instruments, and to enable sampling for calibrations, ongoing studies, and experiments.

Led by ONC’s marine operations experts, the 18-member team of scientists, engineers, technicians, data specialists and Canadian Coast Guard crew were able to complete 52 out of 56 planned operations, resulting in a...