All the photos whose present in this page are taken in August 2010 by Bruce Cauvin from Reunion Island National Marine Reserve
Bruce Cauvin from Reunion Island National Marine Reserve Reunion, La Saline lagoon, on the beach, 12 August 2010 According Bruce Cauvin from Reunion Island National Marine Reserve" Following a remark by one of our interns (Marc), we found several individuals of Glaucus atlanticus stranded on the sea front. We were able to identify about fifteen on only 100 m of coastline" A video of this specimen is online at the site of Réserve Naturelle Marine de la Réunion |
They exhibit a textbook example of colour countershading. Their foot and undersides of the cerata (a), (which because they float upside down is effectively their dorsal surface), is blue or blue and white which helps to camouflage them from predation (sea birds) from above. Their true dorsal surface (b), which faces down in the water, is silvery grey to effectively camouflage them from fish looking up from below.  |
 |
He was associated with :
|
 |
Porpita porpita Bruce Cauvin Reunion, La Saline lagoon, on the beach, 12 August 2010
|
Physalia sp Bruce Cauvin Reunion, La Saline lagoon, on the beach, 12 August 2010
|
 |
 |
Janthina janthina
Bruce Cauvin Reunion, La Saline lagoon, on the beach, 12 August 2010 |