Mauve Stingers (Pelagia noctiluca) and salps (Salpidae) in blue water
This is 2 colonies joined together (initially there were 5 joined). Each colony is 8-10 cm in diameter and composed of 14 individual salps.
Photo 5 and 6 where taken in a glass of water. Possibly this is the aggregate form (blastozooid) of Thalia?. Photo 6; White-yellow sack (left) is stomach; above is atrial siphon (water out); laterally through the center is gill; Right end is oral siphon (water in); Circling the body are muscle bands. https://www.researchgate.net/figure/276535293_fig1_Figure-1-Salp-Morphology-a-Solitary-form-oozooid-and-b-aggregate-form-blastozooid
I think this is a large salp. There were lots of little ones (as can be seen around that really big one which was about a fist size. Would like an ID for the large one if possible :)
Many of these arrived with the strong North Easterly wind. About 1cm long. floating on or just below the surface of the water. Some where attached together in a string of 5-6 'eggs'.
The Thaliacea comprise a class of marine animals within the subphylum Tunicata. Unlike their benthic relatives the ascidians, thaliaceans are free-floating (pelagic) for their entire lifespan. The group includes species with complex life cycles with both solitary and colonial forms.