What would you do if a Caribbean reef shark engaged with you? An amazing GoPro video from the Cayman Islands shows a diver spearfishing a lionfish and getting investigated by a shark. SPOILER ALERT: The nonnative Indo-Pacific lionfish is wreaking havoc in the Caribbean Sea and Atlantic Ocean and the Cayman Islands government permits hunting it with a culling license, but this diver uses his spear to fend off the shark attack. The video has gone viral. We want to know what you think about it. Watch it now!

An east Lombok, Indonesia, fish market — Tanjung Luar — is a butcher shop for sharks and mantas — what can be done? Conservationists are working hard to shine a light on the illegal fishery here and recently had reason to celebrate — Indonesia announced that it is creating a sanctuary for manta rays, banning fishing for these animals within the country’s exclusive economic zone.

Before you get in the water with your brand-new BC, here are our best tips for prepping it so that it's ready for its first scuba dive.

The waters off Malin Head, at the northern tip of Ireland, were the doom of dreadnoughts and the graveyard of the great ships of World War I and II.

The Coral Reef Alliance helps West Maui hotels retrofit in ways that will keep excess nutrients off the reefs. Maui is expanding its distribution system for R-1 water — recycled water treated to the highest standard possible. Learn about it!

.

Just got a new drysuit? No matter the brand the test team at ScubaLab has tips to ensure your new gear fits and works just right for your scuba diving needs.

Do you want to help protect marine life in Florida? The University of Miami's Rosenstiel School Rescue-A-Reef research program might be for you.

Do you have young children who are interested in scuba diving? Check out Robbie Peyton's experience with Kids Sea Camp.

Do you aspire to be an underwater photographer? Read how Craig Dietrich became just that.

Scuba diving in Grand Cayman is for everyone — from Stingray City to the Kittiwake shipwreck to wall diving and macro life — you'll love this island.

Do you find pelicans fascinating? Check out diving with the dalmatian pelicans at Lake Kerkini in Greece.

Are you a fan of wreck diving? Check out what is happening in Limassol, Cyprus.