Hudson's Dorid

Hudson’s Dorid

Acanthodoris hudsoni

Physical Description

Hudson’s Dorid, typically less than 20mm but occasionally exceeding 30mm in length, presents a whitish dorsum adorned with numerous pointed conical tubercles tipped with yellow. A distinct yellow band encircles the margin of the dorsum. Its long rhinophores feature approximately 22-24 lamellae, while its bipinnate branchial plumes, numbering 5, appear greyish-white, often with yellow tips. Notably, the species boasts large and auriculate labial tentacles, extending nearly to the edge of the dorsum.

Habitat and Geographical Range

Found along the eastern Pacific coast, Hudson’s Dorid inhabits suitable marine environments within its geographic range. It may be encountered in various coastal habitats within this region.

What They Eat and How They Breed

Feeding habits likely include consuming small invertebrates or algae, typical of many nudibranch species. Reproduction involves mating behavior, with individuals exchanging sperm. After fertilization, females lay eggs, which are typically deposited in gelatinous masses on appropriate substrates. Upon hatching, larvae undergo a pelagic stage before settling on the ocean floor.

Similar Nudibranchs

There are several species of white dorid nudibranchs found in Monterey. For species often mistaken for the Hudon’s Dorid, check out these links.

Other Species