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18.11.2017 - 08:41 GABRIEL CREHAN Imperial du mileu dans la Calanques de Marseilles

Data dell'osservazione: 
17.07.2017
Nome della località o del sito d'immersione: 
Imperial du mileu dans la Calanques de Marseilles
Corrente: 
weak
Visibilità: 
some suspended particles
Temperatura dell'acqua: 
15℃
Intervallo di profondità: 
Min

20

(m)
Max

30

(m)
Profondità dell'osservazione: 
20.00(m)
Profondità massima dell'immersione: 
30(m)
Estensione orizzontale delle concrezioni coralligene osservate: 
more than 20 m
Orientamento: 
E
Temperatura dell'acqua a profondità prestabilite: 
Gradi Celsius (°C): 
14.00℃
Meters: 
20.00(m)
Continuità dell'habitat: 
Chiazza isolata
Inclinazione: 
Orizzontale
Rugosità: 
Piccola
Altre osservazioni: 

Difficile de plonger avec ma plaquette en mousse plastifiée.

Pendant les observations c'est très bien.

En revanche, à la maison c'est difficle à nettoyer - les marquages du crayon ne s'effacent pas completment. Il reste des traces pour la prochaine plongée. En conséquences des incertitudes à l'observation.....

 

Sinon, c'est ma premiere observation et je suis très content !!!

Pressures and Threats: 
Non-indigenous species: Caulerpa cylindracea (Absent)
Non-indigenous species: Asparagopsis spp. (Limited)
Mucilaginous aggregations (Extended)
Organism necrosis and mortality events (Absent)
Sedimentation on coralligenous biota (Absent)
Diver recklessness (Absent)
Fishing gear (Absent)
Litter (Absent)
Anchoring (Absent)
Urban waste sources nearby (Absent)
Other (Absent)
Coralligenοus Organisms: 
Eunicella cavolini (Very abundant)
Eunicella singularis (Scarce)
Paramuricea clavata (Absent)
Leptogorgia sarmentosa (Absent)
Savalia savaglia (Absent)
Shark eggs (Absent)
Anthias anthias (Absent)
Epinephelus marginatus (Absent)
Scorpaena spp. (Absent)
Centrostephanus longispinus (Absent)
Other sea urchins (Absent)
Calcareous red algae (Absent)
Peyssonnelia spp. (Absent)
Agelas oroides (Absent)
Axinella spp. (Absent)
Myriapora truncata (Absent)
Other erect bryozoans (Absent)
Scleractinians (Absent)
Cliona spp. (Absent)
Corallium rubrum (Absent)
Homarus gammarus (Absent)
Palinurus elephas (Absent)
Scyllarides latus (Absent)
https://cs.cigesmed.eu/sites/default/files/web_axinella_issaris_01.jpg,https://cs.cigesmed.eu/sites/default/files/web_axinella_issaris_05.jpg,https://cs.cigesmed.eu/sites/default/files/web_eunicella-cavolinii_issaris_01.jpg,https://cs.cigesmed.eu/sites/default/files/web_general_issaris_02.jpg,