
Appearance
''Glossodoris rufomarginata'' has a commonly observed length of 3.5 cm, with a maximum length of 5 cm.The background coloration of the entire body is whitish with on the foot and the dorsal surface speckled with a dense coat of tiny red dots to orange-brown that gives the impression at first glance that the animal is brown.
The edge of the mantle is well developed and wavy with a broad white band with a red to orange-brown outer border. The foot has also a white external margin.
The rhinophores and branchial plume are retractable with a red to orange-brown coloration with a white median line on rhinophores and a white highlight on the gills axes.

Distribution
This species occurs in the tropical waters of Indo-Pacific area. It has been observed in localities as far distant from one another as Tanzania in Africa, Mayotte, but it occurs mainly from Sri Lanka to Polynesia and Hawaii.,This nudibranch can be observed mostly on reef and rocky areas in sheltered as in exposed environment but with a preference for area in the shade.

Behavior
Glossodoris rufomarginata has a daytime activity and can be easily met on or in close proximity to its favorite food source which are some black sponges of the family Thorectidae,
Habitat
This species occurs in the tropical waters of Indo-Pacific area. It has been observed in localities as far distant from one another as Tanzania in Africa, Mayotte, but it occurs mainly from Sri Lanka to Polynesia and Hawaii.,This nudibranch can be observed mostly on reef and rocky areas in sheltered as in exposed environment but with a preference for area in the shade.
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