Sea Slug in reef, Mediterranean Spain

adult adults afrasia afro eurasia alone aquatic species arminid (arminina sp) arminids arminina sp atmosphere benthons blue catalonia (autonomous community) color colors colour colours continent continental area costa brava count counting crawl crawled crawling description descriptions ec ecosystem ecosystems eec enumeration enumerations eu eurafrasia eurasia europe european economic community european union full length gastropod gastropods girona (province) global sight global sights image and subject individual individuals landmass landmasses littoral (shore) littorals (shore) localisation localization location lone lonely marine and coastal wetland area marine and coastal wetland areas marine and coastal wetland zone marine and coastal wetland zones marine species may mediterranean sea mollusk mollusks month of year months of year motion motions natural area natural areas nature nudibranch nudibranche nudibranches nudibranchs ocean oceans old world one one animal only overview overviews photos under the water recording recordings reef saltwater species salt water species sea sea and coastal water sea bottom sea bottoms sea slug (janolus cristatus) sea slug (janolus sp) sea water seas seasons seen under the water shoting shotings single solo spain species species characteristic species characteristics species particularities species particularity spring stage of development subaquatic image subaquatic photos subaquatic sights submarine images submarine photo submarine photographies submarine photography submarine photos submarine sight submarine sights temperate ocean temperate oceans temperate sea temperate seas temperate season temperate seasons three quarter length three quarter shot three quarter shots three quarter sight three quarter sights three quarter view three quarter views time scale time scales ue underwater underwater shot underwater shots underwater view underwater views underwaterphoto underwaterphotographies underwaterphotography underwaterphotos underwaterpicture underwaterpictures wild animal wild animals wild fauna wild faunae world sea and ocean world seas and oceans