Island paramedic re-engineers snorkel masks to deliver oxygen, protect front line medical staff Warren Schlote Apr 08, 2020 - 3 min read The yellow mask is for patient use, with a hose for oxygen, while the black mask is for physician use with a filter attached. photos by Warren Scholte The yellow mask is for patient use, with a hose for oxygen, while the black mask is for physician use with a filter attached. photos by Warren Scholte This post is for paying subscribers only Subscribe now and have access to all our stories, enjoy exclusive content and stay up to date with constant updates. Subscribe now Already a member? Sign in