Family Velutinidae

The Velutinidae is a group of mollusks that resemble sea slugs but are more closely related to groups such as the cowries. They have often colored tissue that covers an internal, thin shell. In the Marshalls, there is a large black blob that sits out in the open and is easy to recognize, and there is a small, often colorful but usually cryptic species (or multiple species) that hides under rocks or in algae. Most of the latter resemble the colonial tunicates upon which they prey, or they look like blobs of colored sponge and debris. We often run across them while hunting for nudibranchs, but it has been difficult to get any positive species identifications. For all we know, they all could belong to a single extremely variable species, or they could all be different. We present a variety of specimens, sorted mostly by appearance, in the hopes that someone out there will become interested enough to try to sort all these things out. Except for the large black blob, all the rest are listed as species of Lamellaria, although even that is not certain. Most of the Lamellaria species were not measured, but I suspect the largest of the figured animals was probably not much more than 30mm.


Coriocella nigra


Lamellaria
orange tunicate mimic

Lamellaria
peach tunicate mimic

Lamellaria pale pink tunicate mimic

Lamellaria
pink tunicate mimic

Lamellaria
red tunicate mimic

Lamellaria
white tunicate mimic 1

Lamellaria
white tunicate mimic 2

Lamellaria
white tunicate mimic 3

Lamellaria
yellow tunicate mimic 1

Lamellaria
yellow tunicate mimic 2

Lamellaria yellow orange tunicate mimic

Lamellaria
brown tunicate mimic

Lamellaria orange bryozoan mimic

Lamellaria
black sponge mimic

Lamellaria brown-yellow sponge mimic

Lamellaria orange sponge mimic

Lamellaria pink sponge mimic

Lamellaria
brown sponge mimic

Lamellaria
brown-orange sponge mimic

Lamellaria
white sponge mimic 1

Lamellaria
white sponge mimic 2

Lamellaria
yellow sponge mimic 1

Lamellaria
yellow sponge mimic 2

Lamellaria
sponge mimic 1

Lamellaria
sponge mimic 2

Lamellaria
sponge mimics 3

Typical Lamellaria shells

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