Hello everybody and welcome to Episode 16 of What’s in that Hole?, a fun series I’m writing for my blog. It’s been nearly two years since the last post in this series – which means I have lots of exciting new material! In the last episode, I described some holes I found in the desert Coolidge, Arizona. This time, we’re going to look at holes underwater off the coast of Kona, Hawaii – just about as different as you can possibly get!