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Slide 1 of 8
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A closeup view of the slit. Photo by Dave Cowles, July 2000
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This closeup of the aperture in a living individual shows the anus and papillae which could look like retracted gills inside the opening. The anterior end of the animal is to the left. In this view the mantle has been almost completely retracted from covering the shell.
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Two different individuals. Photo by Dave Cowles July 2000
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Here is the same shell, dissected out of the animal. Anterior is to the left. There is not an obvious groove around the margin of this shell but there are a series of small concentric grooves, including on the margin. The anterior and posterior ends of this shell do not turn up but slope down less steeply than elsewhere on the shell.
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Slide 3 of 8
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The inside of the shell is uniformly white. Photo by Dave Cowles July 2000
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This view of the mouth (left) and foot of the animal show that the mouth and head looks more like that of a typical limpet than of a nudibranch.
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Slide 4 of 8
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Puncturella galeata from 100 m depth, San Juan Channel. Width about 1.5 cm, 2 cm long. (Photo by: Dave Cowles July 2000)
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Fissurellidea bimaculata found at Cape Flattery, WA. The shell is almost completely exposed. in this view (Photo by: Dave Cowles July 2007)
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Slide 5 of 8
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This closeup shows the anterior slit and the seam which leads from the slit to the anterior edge of the shell. This photo was made from a stack of photos which were combined by a computer algorithm to create a much greater depth of field (photo by Dave Cowles, technology by Keyence DHX-100 digital microscope and software)
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Slide 6 of 8
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The anterior slit is separated from the actual apex of the shell by a partition, as can be seen in this view of the underside.
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Slide 7 of 8
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Cranopsis cucullata collected from a red octopus (Octopus rubescens) midden. Length 1 cm. (Photo by: Dave Cowles March 2008)
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Slide 8 of 8
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Slide 2 of 8
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