Blog

Natural History Coral Reefs Exhibition

The Natural History Museum Coral Reefs: Secret Cities of the Sea exhibition, in partnership with Catlin, will let you find out why reefs are so important and how their future is being secured. For more information and to book tickets visit the exhibition page.

Catlin Ocean Academy for Teachers (follow-up 6 of 6)

Ocean acidification is one of the processes threatening marine life and is included in the Coral Oceans and Frozen Oceans resources. This video shows two simple experiments for your classroom to show the process of ocean acidification and its impact on marine life…

Catlin Ocean Academy for Teachers (follow-up 5 of 6)

The Incredible Edible Polyp activity is designed to be used with the Coral Oceans primary scheme of work, but has proved incredibly popular with all age groups and teachers alike. Here’s a video on how to make your own edible polyps with your class and a little twist on the classic anatomy lesson…

Catlin Ocean Academy for Teachers (follow-up 4 of 6)

Here are two videos to introduce your classes to the work of the Catlin Ocean Expeditions. The first is a highlight video including clips and photos from the Catlin Arctic Survey in 2011:

The second is a Day in the Life video filmed with the Catlin Seaview Survey Shallow Reef team in the Bahamas in 2013 to give you a taste for a day in the life of a marine biologist:

Catlin Ocean Academy for Teachers (follow-up 3 of 6)

This video from the great team at One World One Ocean is a brilliant introduction to the ecosystem goods and services that the ocean provides and a summary of the potential and current human impact on our marine environment…

Catlin Ocean Academy for Teachers (follow-up 2 of 6)

When ocean currents go bad and paleoclimatologists become Hollywood heros, the trailer for The Day After Tomorrow and indeed the opening 10 minutes of the film if you can get your hands on a copy of the film, make an exciting and extremely exaggerated introduction to the world of thermohaline circulation and the impact of the Arctic ice on the gulf stream…

Catlin Ocean Academy for Teachers (follow-up 1 of 6)

Dr Helen Findlay helped with this great animation on ocean acidification by pupils at the Ridgeway School in Plymouth. We hope you meet a great range of plasticine characters who can help explain ocean acidification and its impacts to your classroom.

Arctic Live! 2015

Digital Explorer and the Catlin Oceans Education team are returning to the Arctic for an education event which will offer students the opportunity to speak live to a member of an Arctic expedition on Svalbard, the world’s northernmost settlement. For more information and to book now, visit the Arctic Live! 2015 page

Creating Google Photospheres

We are just experimenting with Google Photospheres as part of the digital media toolkit we use to bring the world to the classroom. More soon!

Field science: water sampling

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“There’s no point in doing oceanography if you don’t know what the temperature and salinity are doing. It sets the scene for all the other measurements and samples you take,” remarks Dr Helen Findlay.

We are out in the boat again on Kongsfjorden, the inlet running from the Atlantic Ocean to the Kongsbreen glacier and edging past the science village of Ny Ålesund.

It is easy to forget that the ocean is not just a massive bathtub, but contains different layers of water with different properties at different depths. Internal waves ripple through it and internal rivers run through our seas and oceans. There are two main instruments used for water sampling and they allow scientists to map the water column.

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The first instrument is a niskin bottle. To the untrained eye, it looks like a length of drainpipe with elasticated ends. The niskin bottle has been used for sampling in the polar waters since 1910, when it was designed by Fritjof Nansen and Otto Sverdrup.

The bottle is lowered into the cold dark waters of the fjord on the winch, ends held back, to the desired sampling depth. At each waypoint along the fjord, Helen would take samples at a variety of depths, surface, 15 metres, 25 metres, etc. When the niskin bottle is at the desired depth, a small brass weight, known as a ‘messenger’ is sent down the wire to snap the ends closed and capture a sample of seawater at specific depths.

This is then drawn back to the surface and carefully decanted into obsessively labelled bottles. Helen is studying the carbonate and nutrient (e.g. nitrates and phosphates) content of the water samples. Helen adds mercuric chloride to the samples, which kills any microorganisms, to ensure that the levels of carbonate do not change after sampling has take place.

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The other instrument that is used is a CTD, standing for Conductivity, Temperature and Depth. Again lowered over the side of the boat using a winch, the CTD is used to create a profile of the water column and its important physical properties.

These samples and data sets will then be analysed later to give Helen and the team a better understanding of the waters of Kongsfjorden.

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