Forskalia edwardsi is a Physonecte siphonophore which appears as a linear colony of polyps, but behave as a single individual.
On this picture, the animal swims, in a mouving sequence, on a curved trajectory which allows it to project elongating tentacular filaments which are covered with numerous nematocyst batteries. In resting mode, any prey bumping on this wide network extended around the siphonophore will be entangled by nematocysts filaments and swallowed by gastrozoïd polyps.
Several extended tentacules are visible on top of the picture, but most of them are still folded.

Eutima gegenbauri is a rare leptomedusa of the North West Mediterranean sea. Its long tentacles allows the capture of preys. The mouth and the whitish stomach are situated at the end of a long peduncle under the transparent umbrella. This picture has been taken in mediterranean surface waters (Port-Cros, France) by Vincent MARAN, (ZIEMSKI Frédéric , MARAN Vincent , SITTLER Alain-Pierre in : DORIS, 16/01/2014 : Eutima gegenbauri (Haeckel, 1864), http://doris.ffessm.fr/ref/specie/2399)

Tintinnid species (oligotrich ciliates) from the Bay of Villefranche (J. Dolan).

On the left: Tintinnopsis radix

On the right: Undella hyalina

This is an example of output from the TTAinterfaceTrendAnalysis programm which is designed to facilitate the analysis of long term time series of environmental data. It is a contribution to the R community work.

Protozans (ciliates) Eutintinnus sp.

A : a trophont (feeding stage) cell ;
B : an early stage of cell division with a new mouth developing from an oral primordium (OP) ;
C : a newly divided cell – the top cell will swim away to construct a new shell :

Images of Lugol’s-fixed cells from a mixed culture supplied by Fabien Lombard.

Ultraphytoplankton: Confocal microscope view of cyanobacteria cells (Crocosphaera watsonii). Blue fuorescence is from DAPI staining and red fluorescence comes from chlorophyll. Scales in micrometers (credit: S Rabouille & M.L. Pedrotti).

Mediterranean bathers consider "Pelagia noctiluca" as "The Medusa", the "stinging medusa" - credit David Luquet.

"A glider in Mediterranean Sea sampling for pressure, temperature, salinity, light flux, chlorophyll, C-DOM, on its predefined trajectory."
credit: David Luquet.

credit Christian Emig

ANTEDON II, in the Gulf of Marseille, close to Frioul islands where is located the "Chateau d'If ".
This oceanographic ship is operated by CNRS for the "Centre Oceanologique de Marseille".

credit: L. Prieur.
A BIONESS multinet on board of NO Thalassa 2, ready for plankton sampling in Mediterranean Sea, Dynaproc 2, October 2004.

credit: D. Luquet
"Tethys II"
a french oceanographic ship managed by INSU, operating in Mediterranean sea.

A french oceanographic ship: "Thalassa II" in Nice harbor - Dynaproc 2 cruise (2004)

This ship from the French Navy ("Le Travailleur") was used to sample the bottom of the deep Atlantic sea at the end of the 19th century (1880).