This nudibranch is found in the Eastern Atlantic Ocean (Bay of Biscay) and the Atlantic coasts of Spain and Portugal. This species can reach a total length of at least 40 mm and has been observed feeding on sponges from the genus Dysidea.⁠

 

Fun Fact: This species was described from Balayan Bay, Luzon, Philippines. It has been reported from the Marshall Islands, Solomon Islands, Papua New Guinea, Indonesia, Thailand, Burma and Sri Lanka. Specimens from the Indian Ocean differ in having yellow spots in the paler patches of the dorsal pattern. ⁠

 

Fun Fact: The distribution of this species is primarily Indo-Pacific. It is found in the Philippines, Indonesia, Thailand, Myanmar, Malaysia, New Zealand, Solomon Islands, Taiwan, Australia, French Polynesia, Fiji and Hawaii. Tambja morosa feeds on arborescent bryozoan colonies.⁠

 

Nembrotha lineolata⁠ 📸 @nickhobgoodimages⁠ 📍 Timor-Leste, Southeast Asia⁠ 

Fun Fact: It is found in shallow water in the Indo-Pacific. It was first described in 1905 by the Danish malacologist Rudolph Bergh. The type locality is Selayar Island, Indonesia. ⁠ ⁠

Fun Fact: Ceratosoma amoenum is a common nudibranch found in the intertidal zones of temperate southern Australia and northern New Zealand. There have also been a few reported sightings off the coast of southern Queensland. This species has a white body which is elaborately patterned with orange and purple spots especially on the dorsum. The size of the spots varies according to range, with those individuals in New Zealand having the largest.⁠ ⁠ Ceratosoma amoenum is known to feed on sponges. It has been seen feeding on sponges from the genus Semitaspongia and the species Dysidea fragilis. It sequesters metabolites from its prey as a defense mechanism.⁠