A blog by Pro Dive International
*Header image: On the day of our planned night dive at the Allegro Cozumel, we had to reschedule, as any water activity during thunderstorms and lightning is considered dangerous. We still thought it was worth sharing this breathtaking spectacle with you.*
Have you ever gazed out at the open ocean at night wondering what happens down there as the sun disappears over the horizon and darkness sets in? If all marine life will be sleeping, or if there’s anything creeping along the reefs?
Here’s what really happens, including a list of our Top 5 Party Guests that make you want to add night diving in Cozumel to your bucket list.
While the Caribbean Sea is not calming down at night due to the effectively constant trade-winds in the tropics that drive ocean wave trains and cause waves to break throughout day and night, a vibrant party under the sea is just about to begin, as huge basket stars unfurl their arms into the night, parrotfish create their mucus bubble beds, giant lobsters, king crabs and octopus prepare for hunt, and bioluminescence sparkles up the scene.
TOP 5 Party Guests
1. Basket Stars
These sea stars can only be observed in their true glory at night when they unfurl their many branched arms into the darkness to filter food from the water. Some reach nearly a meter in size! Shine your torch on them and watch them curl their huge arms back towards their mouths as they eat the small creatures attracted by your light.
The perfect party costume, do you agree?
2. Cephalopods – Octopus & Squid
These fascinating creatures are rarely spotted during day dives, but at night you can see them out and about hunting the reef for their next meal. Watch as they move about changing colors and patterns in the blink of an eye! Below is a picture of an octopus spreading its body wide over the reef like a net to encircle its prey.
Did you know that octopuses were that colorful?
Safely tucked away in the back of a crevice during the day, these creatures venture out under the cover of darkness to hunt. A fantastic opportunity to finally get a close-up look at all those king crabs and plenty of lobsters you have only seen as small eyes peering out from the back of a cave.
Up for a dance?
Many fish only half sleep, needing to be alert to the dangers 24/7, but parrot fish have evolved an ingenious warning system so they can get their eyes shut. As night draws in, they find a nook to rest in and start to create a mucus like a bubble encircling their whole bodies. They can rest safely in this for the entire night, but if anything disturbs this veil, they are off like a shot into the dark!
How did this sleepy guy make it into our Top 5?
For those not familiar with this natural phenomenon, bioluminescence is a chemical process which allows living creatures like plankton, tiny crustaceans, some fish, squid and algae to produce light in their body to either attract prey, confuse predators, or lure potential mates.
As the bioluminescent sea will glow when it’s disturbed by a breaking wave or a splash in the water at night, for most of our divers the best part is covering up the torches and waving our arms about disturbing the bioluminescence into sparkling blue points of light.
This makes the perfect party glitter!
Already in a party mood? Pack your dive gear!
How to join the underwater party in Cozumel?
- Join Pro Dive International’s Cozumel Night Dives as a certified diver.
- Boost your skills and make your night dive one of the 5 Adventure Dives of the PADI Advanced Open Water Diver course.
- Contact us for guidance.
The Big Shark Pledge: Shark Trust’s new campaign kicks off with a call for support
With the ink still drying on last week’s landmark listing of nearly 100 species of sharks on Appendix II of CITES, the Shark Trust insists that this is not the time for shark conservation to take a break. The UK-based NGO this week launches its biggest-ever concerted campaign to tackle the overfishing of oceanic sharks. They are calling on people across the world to join the call for stricter controls on high seas fisheries.
The Big Shark Pledge is at the heart of an ambitious set of campaign actions. Working to secure science-based catch limits on all sharks and rays affected by the international high seas fishing fleet. The pledge will build the largest campaigning community in shark and ray conservation history to support a raft of policy actions over the vital years ahead.
Many of our best known and much-loved sharks make their home on the high seas. In our shared ocean, these oceanic sharks and rays face a very real threat from a huge international fleet of industrial-scale fishing vessels. Research published in early 2021 confirmed that over three-quarters of oceanic sharks and rays are now at risk of extinction due to the destructive impact of overfishing. They have declined by 71% over the last 50 years.
The Shark Trust is celebrating its 25th Anniversary this year and has a long history of securing positive changes for sharks, skates and rays. The Big Shark Pledge will build on the success of their NoLimits? campaign which underpinned landmark catch limits on Blue Sharks and Shortfin Mako in the North Atlantic.
“While the listing of so many species on the CITES trade agreement is certainly a positive step, there remains a huge challenge in ensuring that sustainable practices are embedded in international fisheries.” says Shark Trust Director of conservation, Ali Hood. “Sharks on the high seas face extraordinary pressure from excessive fishing practices. This has to be addressed through international agreements such as those secured for Blues and makos.”
There is hope and a feeling of momentum in the shark conservation community. Just last week, in addition to the new CITES listings, the Shark Trust, working with partners in the Shark League, secured the first-ever international quota for South Atlantic Mako at ICCAT meeting in Portugal. The new campaign from the Shark Trust aims to push forwards from here, engaging a wave of support through the Big Shark Pledge to bolster policy action.
This will be a long-term international and collaborative effort. Forging a pathway to rebuild populations of high-seas sharks and rays. By putting science at the heart of shark conservation and fisheries management. And making the vital changes needed to set populations on the road to recovery.
Shark Trust CEO Paul Cox says of the Big Shark Pledge “It’s designed to give everyone who cares about the future of sharks the chance to add their voice to effective and proven conservation action. By adding their name to the Pledge, supporters will be given opportunities to apply pressure at key moments to influence change.”
Fourth Element X Sea Shepherd
This year on Black Friday, fourth element announced their new partnership with Sea Shepherd, encouraging people to move away from mindless purchasing and to opt-in to supporting something powerful.
For 40 years Sea Shepherd, a leading non-profit organisation, has been patrolling the high seas with the sole mission to protect and conserve the world’s oceans and marine wildlife. They work to defend all marine wildlife, from whales and dolphins, to sharks and rays, to fish and krill, without exception.
Inspired by Sea Shepherd’s mission, fourth element have created a collection of fourth element X Sea Shepherd limited edition products for ocean lovers and protectors, with 15% of every sale going to the Sea Shepherd fund to help continue to drive conservation efforts globally.
“Working with Sea Shepherd gives fourth element the opportunity to join forces with one of the largest active conservation organisations in the world to try to catalyse change in people’s attitudes and behaviour. Fourth Element’s products are designed, developed and packaged with the intention of minimising our impact on the ocean environment, and with this partnership, we will be supporting the work of Sea Shepherd, in particular in their work on dealing with the twin threats of Ghost fishing nets and plastic pollution.”
Jim Standing fourth element co-founder
Read fourth element’s Sea Shepherd Opinion Piece HERE
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