It is a marine gastropod mollusc in the family Facelinidae.
[2] This species was described from Sagres, Portugal 37°00′49″N 8°55′31″W / 37.01361°N 8.92528°W / 37.01361; -8.92528.
It has subsequently been recorded from Cantabria 43°18′34″N 2°11′52″W / 43.30944°N 2.19778°W / 43.30944; -2.19778, on the North coast of Spain.
[3] Algarvia alba is a small nudibranch, growing to 15 mm in length.
It has a distinctive appearance, with a white body, white cerata and bright orange-red oral tentacles and rhinophores and an orange line across the front of the head.