Retour dans le #zooplancton des eaux tempérées et tropicales de la planète (donc les nôtres :-)) pour la nouvelle fiche de #Mollusque pélagique :
le #pteropode aiguille droite.
COVES Jacques, LAMARE Véronique, ANDRÉ Frédéric in : #DORIS, 07/07/2024 :
Creseis acicula (Rang, 1828), https://doris.ffessm.fr/ref/specie/3351
#biodiversite #Heterobranchia #plancton #Méditerranée #Atlantique #Mollusca #biodiversity #Pteropoda #macroplancton #Euthecosomata #biodiversidad #aragonite
Like animals from an alien world.
#Pteropoda, sea butterflies are one of the most amazing groups of planktonic creatures.
Pteropods include two completely different taxonomic groups of free-swimming animals: sea butterflies with hard shells (Thecosomata) and sea angels without shells (Gymnosomata).
Both of them share one distinctive feature: they swim using two large fins, or wings, which evolved from the crawling foot of an ancient snail.
#biology #biodiversity
http://coldwater.science/project/pteropoda
In the weird and wonderful menagerie of the twilight zone, the pteropod stands out for its delicate grace. Fluttering through the water column on translucent “wings,” the more abundant shelled variety (Thecosomata group) are known as “sea butterflies,” while the shell-less adult Gymnosomata are known as “sea angels.”
Yuriy Karetin
DORIS_FFESSM_BioSubaquatique
Mikko Tuomi
Warren Currie 🦠🦐