Sea Science

Understanding Great Hammerhead Migration

Friday, 10 March 2017 23:11

By Tanya Houppermans

Hammerhead 01

Although great hammerhead sharks (Sphyrna mokarran) appear powerful and robust, recent research has shown that they are in fact one of the most fragile shark species, being particularly vulnerable to the stress of capture. Even those that are released after being hooked have a nearly 50% chance of succumbing after their ordeal.1 To better protect these sharks, a greater understanding of their movements is needed. The results of a new study conducted by scientists at the Bimini Biological Field Station in Bimini, Bahamas have provided a major step forward by showing the migration patterns and regional connectivity of great hammerheads between the Bahamas and the United States.

Conservation

Diving Community Defeats Illegal Mining Company on Bangka Island

Thursday, 27 April 2017 05:12

By Sarah Wormald

Bangka 01

Image courtesy of GotMuck

The beautiful island of Bangka sits in the heart of the Coral Triangle in Indonesia. Its white sand beaches, crystal clear water, endemic species, traditional way of life and phenomenal coral reefs make it an idyllic diving destination. But for 8 years it has been threatened by corruption and illegal mining, which has left forest areas damaged, mangroves destroyed, islanders distressed and the diving community angered.

Lifestyle

Reef Safe Sunscreen

Tuesday, 13 June 2017 01:15

By Heather Jeffries

Stream2Sea 01

We love to play in, on, and under the waters of our planet. The coral reefs, our oceans, the fragile balance of our freshwater sources and all the creatures within shouldn’t be harmed while we are protecting our bodies. It’s time to make a change; if we want to play in the water, we should also be responsible for what we bring into it. Understanding how our skin care products can affect the marine environments we love is the first step to making better, more EcoConscious choices.

Travel

Manta Alley

Saturday, 03 June 2017 19:03

Text and photos by Mike Scotland

MantaAlley 01

At South Komodo, the cooler waters of the Indian Ocean meet the North Pacific Ocean at Indonesia. Gaps in the Indonesian archipelago exchange seawater, and the upwelling of nutrients from the deeper Indian Ocean creates rich plankton blooms. Blue whales use this path on their annual migrations. Other magnificent creatures come here to benefit from the bounty created where oceans merge. We travelled here on the Seven Seas liveaboard to see the resident manta rays. The magnificent reef manta, Manta alfredi, can grow to a maximum size of 4.5 metres. The far larger Manta birostrus or oceanic manta grows well over seven metres; they are found at Raja Ampat.

Photography

Capture Critters in Lembeh This Year

Friday, 19 May 2017 20:07

By Sarah Wormald

Critters17 01

Image by Sascha Janson

The Lembeh Strait is world famous for its amazing muck diving and outstanding density of critters, making it an underwater photographer’s dream. Whether you are a budding photographer or already an experienced shooter, an underwater photography workshop in Lembeh is an incredible experience - especially when you’re surrounded by renowned professionals.

Equipment

“Bubbles Away”- Oceanic Omega 3 Review

Thursday, 22 September 2016 02:37

By Brett Lobwein

 

The Oceanic Omega 3 side exhaust regulator is the perfect choice for underwater photographers, videographers or SCUBA divers who want to avoid any distraction from focusing on the ocean. Apart from the exhaust [flow] bubbles being directed away from my face, as a photographer I really like the Omega 3’s profile. Being a side exhaust means there is not a bulky regulator pushing up against the back of the camera housing as you look through the viewfinder.

The biggest ‘upgrade” of the Omega 3 over the very popular Omega 2 is that it no longer breathes wet. It comes packaged out of the box with a MaxFlex hose* and a ball swivel, making it very comfortable plus dramatically reducing the regulator pulling against your jaw. Tech divers will also love that this regulator is ambidextrous “no up or down”, making it an ideal choice for a side mount setup.

I have managed to test the Omega 3 to a depth of 52 metres (170 feet). The entire way from the surface to 52 metres the Omega 3 delivered the perfect amount of air without the need for any complicated adjustment knobs. A simple twist operated dive/pre-dive switch is very handy to stop any free flowing on the surface.

omega3 03 blobwein 500x330px

 

Oceanic has paired the Omega 3 with the lightweight and top-performing FDX-i first stage. For those who want to explore colder oceanic waters, the FDX-i is ready with an environmentally sealed diaphragm. As you would expect this first stage is also balanced, which ensures the regulator performs consistently at any depth. I have also been very impressed with the well thought out port layout and positioning. The FDX-i uses Oceanic’s Dry Valve Technology (DVT) preventing water or other foreign objects from entering the first stage, ideal if you forget to put the dust cap on.

Complimenting its modern design, the Omega 3 comes in three colour choices—black, white or clear. Personally I love the clear, as it allows you to see the beautifully engineered internal workings of the second stage. After owning the Omega 3 for over 12 months, I am still blown away by its performance.

*Check with your local dealer that this is standard in your location

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About

Ocean Geographic Explorer (OGX) is a diving adventure resource with a special focus on marine photography and ocean conservation. Our content is divided up into six primary categories: Travel, Sea Science,  Equipment, Photography &Video, Conservation, and Lifestyle. We endeavor be a portal for people with all levels of interest in the marine environment  to learn about and become part of a community of like-minded ocean lovers who enjoy sharing their knowledge of and experiences in our fascinating ocean world.

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