Crepidula under the spotlight

Not long ago, the crepidula, a singular sea snail, invaded our coasts. From 20 000 tonnes in 1995, the stock in Brest Brest would have increased in 2000 to 120 000 tonnes before returning to its level in the 1990s. How to explain such variations? And the crepidula, flail or stimulating species for the biodiversity of the seabed? The effects of its colonization would be question of scale. To bring new elements of analysis to researchers, a new image sensor machine, the PAGURE, plunges for the first time as part of a scientific study.