Please select your home edition
Edition
Excess Catamarans

21st century explorers return with unique data from Indian Ocean

by International Union for Conservation of Nature on 3 Jan 2010
Octopus (unidentified species) Photo: copyright Sarah Gotheil - Indian Ocean seamount creatures International Union for Conservation of Nature - IUCN http://www.iucn.org/

A team of the world’s leading marine experts, paired with scientists from the Indian Ocean region, returned in December from a six-week research expedition above seamounts in the high seas of the Indian Ocean with a whole new understanding of seamount ecosystems. They gathered a very rich collection of data and specimens, including some strange-looking marine creatures.

The scientific survey was organized by IUCN, International Union for Conservation of Nature, and its partners to improve knowledge of seamounts across the southwest Indian Ocean ridge. Seamounts, underwater mountains of volcanic and tectonic origin, are known to be hotpots of biodiversity and attract a range of oceanic predators, including seabirds, whales and sharks. They also attract deepwater fisheries, as they host many species of commercial interest, most of which are very vulnerable to over-exploitation. The results of the research do not only have a scientific interest, but will help improve conservation and management of Indian Ocean marine resources.

'I am extremely pleased with the data that we have collected and the number of species that we have encountered', says Dr Alex David Rogers, Chief Scientist of the Cruise and Senior Research Fellow at the Zoological Society of London. 'The diversity of species that we sampled is higher than what I would have expected. Some species have been recorded for the first time in the region, and we hope to have found some species new to science. It was also very interesting to discover that the six seamounts we surveyed are very different from each other, and I believe our findings will certainly improve our global knowledge of seamount ecosystems'.

The Norwegian research vessel Dr Fridtjof Nansen left on 12 November from Reunion island, and travelled 6,000 miles in 40 days to study five seamounts on the southwest Indian Ocean Ridge, and one seamount further north on Walters Shoal, south of Madagascar, before docking in Port Elisabeth, South Africa, today. All features were located in waters beyond national jurisdictions, at two to three days' sailing from the nearest land. Two of them had been set aside on a voluntary basis as protected areas by the Southern Indian Ocean Deepsea Fishers Association, which would allow comparison between fished and unfished seamounts.

'It is gratifying to know that this work is not an isolated scientific trip, but will directly feed into conservation and management recommendations', says Sarah Gotheil, Programme Officer with IUCN's Global Marine Programme. 'Through our study we hope to confirm the conservation benefits of protecting seamount features on the ridge. This will inform future management of deep-sea ecosystems in the high seas globally'.

In total, nearly 7,000 specimens have been collected and labeled, from two-metre long fish to tiny crustacean larvae. They include an impressive variety of fish, shrimps, squids and gelatinous marine creatures. Many more microscopic species of phytoplankton and zooplankton, representing the base of the food chain in the ocean, have also been collected. The two seabird and marine mammal observers recorded thousands of seabirds from as many as 36 species, and 26 marine mammals. Two of them, majestic humpback whales, even offered the team a wonderful 30-minute show of jumping around at just a few metres from the ship.

Partners:
The expedition is supported by expertise and funding supplied by partner organisations including the United Nations Development Programme, the Global Environment Facility, Zoological Society of London, the EAF-Nansen project, the Institute of Marine Research, Agulhas and Somali Current Large Marine Ecosystems Project; the Marine Ecology Laboratory, University of Reunion and the African Coelacanth Ecosystem Programme.


Project website: www.iucn.org/marine/seamounts




http://www.iucn.org

Henri-Lloyd Dynamic RangeZhik 2024 DecemberV-DRY-X

Related Articles

Admiral's Cup Inshore Racing Day 3
Youth, grit and glory define inshore battle The final day of inshore racing at the 2025 Admiral's Cup delivered high drama, high stakes and no shortage of action, especially at race starts. Three intense races pushed crews to the limit and completed the six-race inshore series.
Posted today at 4:58 am
WASZP Games 2025 Day 4
The Weymouth weather continued to keep the fleet guessing The Weymouth weather continued to keep the fleet guessing, with the northerly breeze hanging in the early forecast before giving way to a westerly build.
Posted today at 4:38 am
Admiral's Cup Paul Wyeth Thursday Photo Gallery
The battle points ahead of the Fastnet race intense The six-race inshore series has now been completed with an unstable northerly, swinging to the west later. The starts were particularly intense as the teams battled for points ahead of the Fastnet, and Paul Wyeth was on hand to capture the action.
Posted today at 4:18 am
Admiral's Cup 2025 | D3 Inshore Racing Videos
More light and tricky conditions on the Solent. Three races? More light and tricky conditions on the Solent. Three races?
Posted today at 1:55 am
O'pen Skiff World Championship in Japan
Team USA delivers a solid performance Five US sailors traveled to Nishinomiya, Japan for six days of challenging conditions, hot temperatures, and world class sailing. USA sailor Lucas Doran was in third place in the U17 fleet before the final day of racing.
Posted on 24 Jul
Admirals Cup: Day 4 - All hanging on the Fastnet.
The end of the beginning of the 2025 Admirals' Cup. Rán runs aground - claims redress. Today marked the End of the Beginning of the 2025 Admirals' Cup with the conclusion of Inshore racing on what is known as the "Central Solent". The Baltic teams' TP52 Rán hit a sandbank and has claimed redress.
Posted on 24 Jul
Palm Beach Motor Yachts Trans-Tasman 49ers Series
Happening for the first time at Hamilton Island Race Week Palm Beach Motor Yachts is proud to be the naming rights sponsor of the Palm Beach Motor Yachts Trans-Tasman 49er Series, which will debut at the 2025 Hamilton Island Race Week, celebrating its 40th edition in August.
Posted on 24 Jul
Less than 48 hours to Rolex Fastnet Race
Battle lines are being drawn up Battle lines are being drawn up for the RORC's centenary Rolex Fastnet Race. As the final day of Admiral's Cup inshore racing took place in the Solent, so several yachts due to take part in Saturday's main event were out training.
Posted on 24 Jul
A Day at the WASZP Games
Video interviews with some of the sailors and supporters of the class The WASZP Games 2025, being held at the Weymouth & Portland National Sailing Academy in the UK, has attracted 248 of the foiling dinghies to take part in a week of varied and high intensity racing.
Posted on 24 Jul
Admiral's Cup David Maynard Thursday Gallery
First race of the day, captured for our viewing pleasure David Maynard was out on the water to catch the action from the first on Thursday of the Admiral's Cup Inshore Racing.
Posted on 24 Jul