Diver Dominik Ern shared footage of a small fish cleaning his mouth just outside a notorious submarine sinkhole.
A few hundred metres of nothing and multiple dead divers at the bottom were under him, but look at this lil guy cleaning my mouth.
Over 100 people have died there in the last two decades, and memorial stones dot its perimeter.
In the video, Ern removes his mouthpiece to let a bluestreak cleaner wrasse do its job.
For fun, he told Newsweek. "These little fish are known for cleaning other animals, including moray eels and other predators. They have no fear.