This is the BC.

It's a buoyancy compensator.

You can inflate it and deflate it to make you float, bob on the surface.

When you deflate it, the weight of the tank and your weight belt makes you sink down.

(Meg) I think we'll have a much greater chance of seeing sea cucumbers, urchins, and gorgonians because we have the opportunity to go to the bottom and move things around and actually search for them.

Getting ready for scuba diving, putting on the wet suit, putting on your BC, everything, or even snorkeling, just putting on the wet suit, it's pretty much the most challenging part of the entire dive just because you definitely work up a sweat.

Fins on, regulator, not your snorkel-- just makes it a little easier.

Then you'll wait for a wave, you'll pop out one at a time, swim out to me, give the okay, then the next one will go.

Whoever is going first.

I want to see some of the gorgonians and urchins and cucumbers because we were not able to see those while snorkeling.

♪ ♪ (Meg) When you go scuba diving, you forget about how cold you are or how tired you are because you're so focused on oh my gosh, look what's around me, it's so amazing!

You get up close and personal with these animals and plants.

(Elle) When we went down, we definitely saw some urchins, some gorgonians.

(Meg) We even saw some sheephead.

Just the way the beauty is presented to you while scuba diving, it can get your attention, and you want to learn more about it.

I mean, if marine biology was not as beautiful work as it was, then I doubt so many people would be interested in it.

(Elle) I think that's really cool because we're actually helping people and doing actual data that's going to help people and be on an official Website to see how our reefs are doing and how our fish are doing.

I think it's going to be really cool.