Watch and enjoy Mason Ho navigate these beautiful little barrels on a dry section of reef somewhere on the North Shore.

Carilli: Even small increases in temperature ... Narrator: In 2016 and 2017, the Great Barrier Reef was hit with a massive marine heat wave, leading to the longest coral-bleaching events ever ...

These living motes are too small to name. Are they destined for adulthood in a sea grass bed, or coral reef, or open ocean, or right here in the mangroves? Too soon to tell. And so it goes on ...