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Sea slugs | Meeresschnecken

25 images Created 29 Oct 2008

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  • Polycera quadrilineata [size of single organism: 2,5 cm]
    00039.jpg
  • (Hydatina physis),  Another primitive sea-slug, we can see in this species how the body is becoming more prominent than the shell. This represents a stage in the process by which 'snails' have evolved into 'slugs'. This common tropical species feeds on polychaete worms (30mm).
    00046.jpg
  • (Cerberilla sp.)
    00049.jpg
  • (Halgerda malesso)
    00052.jpg
  • (Pteraeolidia ianthina)  Commonly known as the 'blue dragon' by divers in eastern Australia, this aeolid is one of a group of remarkable nudibranchs which are way ahead of man in harnessing solar energy. It has evolved a method of capturing and farming microscopic plants (zooxanthellae) in its own body. The plants flourish in this protected environment and as they convert the sun's energy into sugars, they pass a significant proportion on to the nudibranch for its own use. The white animal is a juvenile which as not yet developed its crop of zooxanthellae.
    00069.jpg
  • (Polycera quadrilineata)
    00040.jpg
  • (Hypselodoris bullockii)
    00047.jpg
  • (Polycera quadrilineata)
    00041.jpg
  • (Chromodoris annae)
    00042.jpg
  • Die Nacktschnecken gehören zu den farbenprächtigsten Tieren im Ozean. Bei vielen von ihnen sind die auffälligen Farben eine Warnung, denn sie sind giftig.
    00043.jpg
  • (Chromodoris dianae)
    00044.jpg
  • (Chromodoris sp.)
    00045.jpg
  • (Hypselodoris bullockii)
    00048.jpg
  • (Chromodoris geometrica)
    00050.jpg
  • (Phyllodesmium briareum)
    00051.jpg
  • (Flabellina rubrolineata) Aeolid nudibranchs can be recognised by the long tubular 'cerata' which grow out from their body. Each 'ceras' usually has a tube-like branch of the gut running to its tip. In those species, such as Flabellina, which find on hydroids and other stinging cnidarians, there is a sac at the tip of each ceras which contains stinging cells removed from the cnidarian (30mm).
    00053.jpg
  • (Nembrotha purpureolineolata)
    00054.jpg
  • (Jorunna funebris)
    00055.jpg
  • (Chromodoris annae)
    00056.jpg
  • (Chromodoris annae)
    00070.jpg
  • (Risbecia tryoni)
    00057.jpg
  • (Nembrotha kubaryana)
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  • (Ceratosoma tenue)
    00065.jpg
  • (Chromodoris sp.)
    00067.jpg
  • (Glossodoris cincta)
    00066.jpg