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JC036 Blog 17 - A weekend to remember

Hmmm, it’s tough where to begin! It’s been another crazy weekend – probably the busiest few three days of the cruise! Friday saw lots of coring, to everyone’s frustration the weather was just  bit rough for deploying ISIS so we had to continue to coring.

A number of piston cores, mega cores and a CTD were deployed during Friday.

There was a fire drill on Saturday for the ship’s crew which saw them practicing searching for a casualty in a smoke filled room.

Saturday saw a change in the weather and our first window of opportunity for deploying the ROV.

Doug jumped at the opportunity and just after we came on at midday Saturday afternoon the ROV was being hoisted over the side and made ready to dive. Despite an early hiccup with a fuse blowing in the control van, the dive went spectacularly well and for twelve hours we explored the seabed and viewed some remarkable cliffs spanning many hundreds of feet high.

Finally the canyon’s started to reveal their secrets. We came upon a mass of xenophyophores which got Andy and the rest of the team very excited – these critters aren’t very well understood so we took a few samples for analysis. We also started to find lots and lots of cold water coral representing many hundreds of years of growth.

Sampling throughout the dive was intense as the scientists chose specimens that were needed for DNA cataloguing. I spent a fair few hours piloting on sheer cliffs which was a bit of a challenge because of the currents, terrain and not wanting to damage any of the fauna but really enjoyable. The selection of specimens we retrieved was good and these will help us understand the dynamics of the canyon system.

If our dive on Saturday had been amazing, we were installing for a truly spectacular dive during our Sunday watch. Launching at dinner we quickly made the descent to the seabed some 1500m below us. As we approached the seabed the visibility became poor and the terrain was incredibly rough – lots of broken boulders and strong currents. Controlling ISIS was quite intense. Then the currents gradually died down and we came upon a sheer mass of stone covered in the biggest collection of coral I had  (and many others in the control van) ever seen. We had stumbled on something amazingly special! For the next 5 hours we moved up and down the wall studying the huge clumps of coral that covered every inch of the canyon wall and photographing every critter we came across. This coral was home to a massive variety of beasties who lived inside the mass of intertwined coral. However, we had little time to admire the scenery! The rock face may have been sheer – but there were lots of overhangs we had to skirt and we encountered our first fishing net and long lines caught in crevasse on the cliff face. The team was on form calling out any overhangs or obstacles that presented a danger to the ROV. The dive was an immense success. We traversed across and up and down the cliff taking nearly 1000 images!

 

Above: ISIS on the surface at the end of dive 114

Above: ISIS on the surface at the end of dive 114

Above: ISIS being winched at the end of dive 114

Above: ISIS dive 114 Sample

Above: ISIS dive 114 Sample

Above: xenophyophores

Above: xenophyophores

Above: xenophyophores

Above: ISIS dive 114 Sample - Coral worm thing!

Above: ISIS dive 114 Sample

Above: ISIS in the water during the night recovery

Above: Bridget and Nathan cutting a core in two for analysis

Above: Paul with one of his birthday presents and a newspaper of humorous stories may by all onboard to celebrate his birthday

Above: Lee in BA gear during a fire drill

Above: Leon during the fire drill

Above: Close-up of piston core

Above: mega core being recovered

Above: mega core being recovered

Above: View in ISIS control room as she works on a hug coral covered cliff

Above: ISIS on deck

Above: One of the samples from dive 114

Above: One of the samples from dive 114

Above: One of the samples from dive 114

Above: Terresa with one of the samples - a sea whip thingy?

Above: Close-up of one of the samples

Above: Close-up of one of the samples from dive 114

Above: Close-up of one of the samples from dive 114

Above: Picture fro Libby's mum!

Above: Close-up of one of the samples from dive 114

Above: Andy looking inside the box cores for his xeno's!

Above: Paul gets to grips with one of the samples

Above: Holothurian

Above: Paul with some DEAD coral taken from the massive debris field at the base of the canyon wall. This will be analysed to find out why its dead

Above: Close-up of one of the samples from dive 114

Above: Close-up of one of the samples from dive 115

Above: Close-up of one of the samples from dive 115

Above: Sven with one of the samples from dive 115

Above: Holothurians from dive 115

Above: Inside the busy control room during dive 116

Above: Inside the control room as we inspect part of the huge coral covered canyon wall

Above: ISIS takes a close-up look at the coral

Above: Massive ammount of coral

 

 
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JC030 Blog Entry 17
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JC030 Blog Entry 19
JC030 Blog Entry 20
JC030 Blog Entry 21
JC030 Blog Entry 22
JC030 Blog Entry 23
JC030 - Fugro Saltire Visit
JC030 - Karel's Photos
JC030 - Mount Tumbledown
JC030 - South Georgia


JC036

JC036 Blog Entry 1
JC036 Blog Entry 2
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