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Sea urchin & star fish

At work (at the Kieler Forschungswerkstatt) there are a couple of fish tanks with interesting stuff in them. I made these videos ages ago but just thought I’d share them now anyway. I find it pretty fascinating to watch the undersides of sea urchins and star fish! And I read somewhere a while back that they are actually closely related: If you wrapped the segments of a sea urchin downward, you would get a star fish. No idea if it’s true, though, I might just have perpetuated an urban legend? Do you know?

 

 

Discovering Google Earth Engine

Remember we did an expedition learning course in Kiel bight a while ago? I wish I had known about Google Earth Engine then already. Even without signing up (which I will do as soon as time permits) you have access to their timelapse: a global composite of satellite images, which results in a cloud-free 32-year video of the Earth’s surface. And the best feature: It’s zoomable! So you can look at your favourite beach (or any region of the world you are most interested in — disappearing rain forests? Growing cities? Shrinking glaciers? (Careful — there is some weird aliasing of the seasonal signal in there)).

For me, it’s obviously coast lines. And especially the beaches of Kiel bight: You see sand moving around and the beach shape changing to what we see today. What a great motivational intro for any course on coastal dynamics!

So super excited about finding this tool that I had to share immediately :-)

Awesome reflection of a wave train

This is a really good way to train your eyes to spot reflections of waves: watch a single wave train hit a sea wall:

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Please don’t get sea sick when — about halfway through — I’m moving the camera around :-)

More than 2/3rds need to be water

I’m in this weird phase right now: In landscape pictures that I take, I like more than 2/3rds of the total area to be of water. That I like water shouldn’t really come as a surprise to anyone, but this perspective — looking from right above the water level towards the horizon — is new to me and I am totally into it. Maybe because I’m swimming almost every morning these days?

Anyway, here is a bunch of pictures taken in Ratzeburg recently when I helped out in their sailing school (ratzeburger-segelschule.de — totally recommended! Clearly awesome instructors there ;-))

And obviously the first one of the bunch had to deviate from my 2/3rds-water rule…

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