Granite pebble stone from Merced river in Yosemite

By using the magnet tapped to the camera of my phone to connect only the lens module of the foldscope, I enabled a way to image the surface of the pebbles. Interestingly, I have seen some very fragile while structure. By breaking the pebbles, we can see an incredible difference outside/inside in terms of color…

A foldscope in a geocache – San Francisco

Geocaching is an outdoor recreational activity, in which participants use a mobile device to hide and seek containers, called “geocaches” or “caches”, at specific locations marked by coordinates all over the world. So with my super-user friend @babo989 we decided to put a foldscope in a geocache hoping the people will us it, post discoveries…

Few species found in the Erdre river – Nantes (France)

On this video, two things looks to me very interesting. First the fact that this Rotifer (?) is attached to a Daphnia (cf. post : Inside the eye of a Daphnia). The second one is the sort of ball attached to this Rotifer, any idea ? This Copepode is interestingly covered by what looks to…

Inside the eye of a Daphnia – this common fresh water flea (France)

By using a plankton net in a river, it becomes easy to collect an incredible things. Luckily, we got a lot of Daphnia, this small planktonic crustacean was omnipresent in our sample. This organism have been well studied as model in biology since its transparency is giving the possibility to see its different organs. From…

Spiral bacteria during Bio-X at Stanford

Even if bacteria are mostly small, we can clearly see them moving back and forth in this video. Captured in a pound close by the campus, there are apparently magnetobacteria.

Having a look in the hindgut of termites

If you get a chance to go to Yosemite by car, you should see an insane number of rotten logs in the woods. A ranger explained to me that it’s because of a snow storm causing toppling of trees. All those logs on the floor are progressively rotting and eventually in spring will form a…

Particules from Californian’s fire

It has been two days now that a part of California is on fire. It’s possible to see a smoky sky since and the particules are then falling everywhere in the Bay Area. I left my bike outside Stanford’s campus during the last week and it was cover as you can see : Under a…

Tara Pacific – San Diego to Panama – Adventures on Islands

Leaving Tara to explore the islands close by was valuables moments. First at Clipperton Island which is an uninhabited 6 km2 coral atoll in the eastern Pacific Ocean off the coast of Central America. It is 10,677 kilometers away from Paris, 5,400 km from Papeete, and 1,081 km from Mexico. Clipperton has a ring-shaped atoll which…

Tara Pacific – San Diego to Panama – Foldscopes onboard !

Having foldscopes onboard was completely essential for us to enjoy the beauty of those creatures, the plankton ! Others were as fascinated than me by those creatures, discoveries that I want to share with you : Seeing them living was even more extraordinary :

Tara Pacific – San Diego to Panama – Missions onboard

During the whole leg, I was in charge of plankton sampling, everyday, on the morning and during the evening. It was quite intense !!First there was this system made to pump the water while we were continuing to move forward with Tara. And this net capable of collecting plankton at high speed. The aim was…

Tara Pacific – San Diego to Panama – Overview

I had the chance to go onboard Tara, a famous scientific vessel that has sail nearly 100,000 km around the Pacific Ocean for more than two years. I participated to the last scientific leg of this fabulous adventure, a leg from San Diego to Panama. Tara is a 36 meters aluminum-hulled schooner, 10 wide and…

Symsagittifera roscoffensis

I have the chance to live by the sea in the north west of France, in Brittany. Here, it’s quite easy to sample Symsagittifera roscoffensis directly on the beach during the low tide. They basically look like this under the foldscope : These free-living acoelomorph worms, formerly called Convoluta roscoffensis, have a characteristical green color…