This advertisement has not loaded yet, but your article continues below. Steve Haining and Ciara Antoski went deeper than the no-decompression limit at a wreck in 50 metres of water off the coast ...

Seeking gentler floss, I dabbled in high-pile, fuzzy flosses, but I hated them; their sticky girth snagged between my teeth, leaving behind fuzz that I had to fish out with yet more floss.