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How to be a responsible diver

Updated: Jun 4

Beneath the waves lies a menagerie of creatures, from colourful nudibranchs to majestic manta rays and inquisitive octopi. Yet many of these animals face mounting threats - warming waters, acidifying oceans and swirls of plastic trash that make life underwater increasingly difficult. 


As divers, we bear a duty to protect these endangered creatures and the environments they call “home”. So the next time you’re preparing to head below the surface, follow these tips to be a steward, not just a spectator.


By being a responsible scuba diver, we can help preserve our splendourous seas for future generations. 


silhouette of a responsible diver in blue ocean

Dive with responsible operators


First and foremost, look for operators who are passionate about conservation. Ask about their policies on anchoring, waste management and protecting the seabed. Do they enforce responsible diving practices, such as not baiting or touching marine life, and what are they doing behind the scenes to minimise their environmental impact? If they can't speak in detail about protecting local ecosystems, that's a red flag.


Watch out for greenwashing. Some companies boast sustainability claims that don't hold water. Be wary of outfits promising interactive wildlife encounters - ethical operators would never guarantee shark or whale sightings. With some research, you can find operators who align with your conservation values.


Only dive with operators who limit their numbers in the water and offer small group dives. Mass tourism stresses reefs and the animals that live there. Plus, fewer divers means your guide can provide a more personalised experience.


Green Fins is making it easier for divers to identify sustainable operators, with this list of Green Fins-certified dive resorts ensuring an eco-friendly stay.



responsible diving to support marine conservation

Use reef-safe sunscreen


Have you ever slathered on sunscreen right before jumping into the ocean? Unfortunately, some lotions are doing more harm than good. Many popular sunscreens contain chemicals like oxybenzone, octocrylene and octinoxate, which studies show can bleach coral reefs and deform fish. Instead, use reef-safe sunscreens made from natural and biodegradable products. 


What makes a sunscreen reef-safe? It’s not only about avoiding those three harmful ingredients as the issue also lies in the size of the particles. If they are nano-sized (under 100 nanometres) they can be absorbed by coral, regardless of the mineral used. Opt for a sunscreen with non-nano, larger-sized zinc oxide or titanium dioxide particles. This provides broad-spectrum protection while ensuring the minerals stay on your skin, instead of sinking into fragile reef ecosystems.


Select dive sites that match your skills


When selecting dive sites, it's crucial to only dive those that suit your skill level. This ensures you'll stay in command of your movements and buoyancy under the water, rather than crashing into the reef or scraping against coral. If you’re not yet comfortable diving in currents, don’t go there, and if your buoyancy isn’t up to scratch, work on it!


Mastering your diving buoyancy takes practice, but it's well worth the effort and there are plenty of courses to help you take control. When you're neutrally buoyant, you'll hang weightless in the water column, neither rising nor dropping. This spares the reef from accidental bumps and scrapes….and it spares you discomfort and injury. 


Remember, experienced divers have spent years perfecting their technique. Don't be afraid to start small and work your way up. The reefs will still be there when you're ready for more challenging dives. Taking it slow allows you to build skills and protect the ecosystem we all treasure so much. 


Looking for a new dive destination? Discover 10 UNESCO dive sites to explore before you die.



sustainable scuba diving

Be responsible on the dive


Before entering the water, secure your gear tight so that nothing dangles free. Loose equipment can easily break coral and trashed equipment may bring your dive to a sudden end. Proper weighting will help you to manage yourself at depth and reduce your impact on marine sites. With the right amount of weight in your belt or integrated into your BCD, you'll find yourself effortlessly hovering at eye level when your BCD is deflated and your lungs have a normal amount of air.


When entering or exiting the water, avoid doing so on top of shallow reefs. Instead, enter and exit in deeper water, then fin over to the reef. If diving in shallow water, be mindful of your kicks so you don’t accidentally damage the coral below. Once submerged, streamline your body, ideally with your arms folded in front or behind. In this way, you will glide through the water, rather than be flailing about. 


When encountering marine life, it's crucial to be respectful of their space and needs. Always keep your hands to yourself - don’t touch the reef or any marine life as it can be detrimental to their health. If an animal feels threatened, a defensive response shouldn't come as a shock. Appreciate ocean creatures from a safe distance. Give them a wide berth, move gently through the water and don't disrupt their habits. This ensures their well-being and your own.


Want to plan a sustainable dive vacation? Check out 13 of the world's best eco-friendly dive resorts around the world.


Collect rubbish along the way


The ocean may seem endless, but every piece of trash we remove makes a difference. Though one diver's efforts may appear small, they can inspire others to follow suit…. and many small actions together can drive great change. So if you see a piece of rubbish or trash during your dive, take it with you. 


Collecting debris while diving is simple. Bring a reusable bag or a mesh sack, then gather any plastic, cans, fishing line or other junk you encounter during the dive. Alternatively, place the piece of rubbish in one of your BCD pockets to dispose of later. 


When booking your next dive trip, look for operators hosting cleanup dives, which are a fun way to take action while meeting like-minded divers. More and more centres are taking the initiative to help clean up their backyards and the collective results are making a difference. 





Leave nothing but bubbles


Lurking below the waves are staggering levels of plastic pollution - over four billion microfibres per square kilometre blanket the seafloor. This toxic soup threatens a range of marine life, including sea turtles. After ingesting plastic debris, many turtles develop "floating syndrome," leaving them unable to submerge into the depths or evade predators. They simply drift aimlessly across the surface, unable to hunt or hide.


As divers and ocean lovers, it’s important that we take everything from the ocean that we bring in. Be sure to take all plastic waste with you and don’t leave trash on the boat that could get blown overboard while you’re busy underwater. It’s also important to retrieve all gear - don't abandon equipment, weights or photography accessories, which can trap, entangle or poison ocean wildlife if left behind.



responsible scuba diving to protect marine life

Support marine conservation projects


As divers, we have the rare opportunity to immerse ourselves in the beauty of the underwater world while actively protecting it. By joining marine conservation initiatives, you’ll be putting your skills to work preserving fragile underwater ecosystems while gaining a better understanding of issues threatening them. 


Many non-profits and volunteer organisations are seeking trained divers to support critical data collection efforts in endangered marine habitats. Whether you're a newbie gearing up for that Open Water certification or an experienced diver ready to tackle advanced training, you can find a project that matches your abilities.


Alternatively, donate to marine conservation organisations, such as the Olive Ridley Project, the Marine Megafauna Foundation or the Coral Reef Alliance. Each has a particular focus, so it’s easy to find a mission that you are passionate about. 


Being a responsible diver


As divers, we have a profound responsibility to be stewards of the oceans, to protect and preserve these fragile ecosystems for generations to come. The next time you don your scuba gear and descend beneath the waves, do so with a reverence for the marine life around you and a commitment to minimising your impact - by respecting wildlife boundaries, avoiding contact with coral and carefully disposing of any waste you generate. Through these small but impactful actions, we can help safeguard our oceans, ensuring they continue to captivate and inspire both us and those who come after.




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