Order: Nudibranchia - True Sea Slugs

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Family: Chromodorididae.
Below is the Chromodorididae section of our Field Guide, please click on the thumbnail image to view an enlargement. Chromodoris are mainly sponge feeders.
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Ardeadoris egretta

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Ardeadoris egretta

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Ceratosoma tenue. Variable coloration.

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C. tenue. Recognized by wing shaped mantle and and long tail.

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C. tenue. Mantle glands possess defensive chemicals, distasteful to predators. These toxins are obtained from the sponge Sesquiterpene.

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Chromodoris coi

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C. coi. Small orange bags located in gills are egg sacs from small crustaceans called copepods.

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Cadlinella ornatissima. Recognized by pink tipped tubercles. Large mantel glands seen around mantel edge.

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C. ornatissima. Unlike C. subornatissima this species base yellow colour covers most of the dorsum to the tubercles.

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Cadlinella ornatissima. Shows long rhinophores

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Chromodoris annae white banded form

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Chromodoris annae

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Chromodoris annae

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Chromodoris annae

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Glossodoris atromarginata

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Glossodoris atromarginata

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Chromodoris aureopurpurea

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Chromodoris aureopurpurea

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Chromodoris dianne

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Chromodoris fidelis

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Chromodoris geometrica

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Chromodoris hintuanensis

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C hintuanensis spots not always present, tends to wave the mantle showing its purple underside

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Chromodoris kuniei

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Chromodoris kuniei

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Chromodoris lochi

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Mexichromis multituberculata

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M. multituberculata

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Chromodoris magnifa

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Chromodoris magnifa. Believed to feed on the red sponge Negombata.

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Chromodoris michaeli

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Chromodoris michaeli

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Chromodoris michaeli

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Chromodoris lineolata. Recognized by orange border around the mantle with sub marginal fine black line

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C. lineolata. Similar to C. striatella which has a white sub marginal line.

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C. lineolata. Fine white/orange longitudinal lines, set on a black background colour.

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Chromodoris preciosa. A thin white line of glands can be seen around the outer edge of the mantle.

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Chromodoris preciosa. Red rhinophores and gills edged with silver lining. Recognized by red and yellow band around mantle.

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Chromodoris reticulata

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Chromodoris reticulata

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Chromodoris willani

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Glossodoris cincta

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Glossodoris cincta has the ability to secrete a defensive mucus

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Glossordoris cincta feeding on a thorectid sponge, the lighter parts are the eaten sponge

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Hypseldoris apolegma laying Eggs. White marginal band mottles as it nears the dorsum.

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Hypseldoris apolegma. Displaying yellow/ orange rhinophores and gills.

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Hypseldoris bullockii - Most common form.

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Hypseldoris bullockii - Feeding on a sponge.

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Hypseldoris bullockii variant.

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H bullockii close up of the mating procedure .

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Hypseldoris bullockii variation displaying thick white marginal band and purple gills.

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Hypseldoris bullockii. Closely related to H. apolegma.

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Hypseldoris emma. Three purple longitudinal lines are characteristic of this species.

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Hypseldoris emma. Blue to purple border around the foot and mantel edge.

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Hypseldoris emma. Named after the daughter of Dr Rudman, Respected Sea Slug Specialist.

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Hypseldoris kanga. Most often displaying yellow spots on the gills.

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H. kanga. Species differs from H. infucata by bearing dark rhinophores and having a triangular appearance to the gills.

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H. kanga. Aggressively feeding on its favored sponge.

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H. kanga. For additional close up shots of H.kanga feeding see Close Up section within this guide

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Hypseldoris purpureomaculosa. Little is known of this species

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H. purpureomaculosa. Feeding on sponge Euryspongia. The white fibers where the sponge has been consumed.

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Hypseldoris infucata. Distinguishing factor red rhinophores and gills.

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Hypselodoris infucata. Variable species

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H. infucata. Similar to the H.kanga but gills and rhinophores differ, see Kanga for comparison.

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Risbecia tryoni. Often seen in pairs, one riding the others back.

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Risbecia tryoni. Only a few Nudibranchs are known to display this riding behavior.

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Risbecia tryoni. Possible reasons for this riding behavior are to save energy or they are a mating pair.

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Risbecia tryoni and Partner Shrimp both feeding on the same sponge.

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Risbecia tryoni and Partner Shrimp