About Geitodoris planata (Alder & Hancock, 1846)
This species has the scientific name Geitodoris planata (Alder & Hancock, 1846). It has an oval body with a rigid mantle. Its dorsum is covered in rounded, stalked tubercles. The background body color is grayish-brown, marked with irregular dark brown patches. Color fades and becomes more translucent approaching the mantle margin. Larger tubercles are surrounded by opaque white pigment. Rhinophores and gills are typically the same color as the dorsum, with white tips. The maximum recorded body length of this species is 65 mm. The known distribution of Geitodoris planata covers the Mediterranean Sea, the North Atlantic Ocean, and the North Sea, plus locations in the Western Atlantic: New Jersey, St. Lucia, and Panama. The species' type locality is Lamlash Bay, Isle of Arran, Scotland. The minimum recorded depth for this species is 91 m, and the maximum recorded depth is 267 m, though observations indicate it also lives in shallower water. In Panama, it was found in coral rubble within a predominantly seagrass habitat. Its recorded prey are the sponges Hemimycale columella and Hymeniacidon perlevis.
