Obor-obor layar

Pelampungnya ialah cakera bujur leper berwarna biru dengan panjang sehingga kira-kira 10 cm; di atasnya terdapat layar nipis yang lazimnya digambarkan berbentuk segi tiga dan condong secara pepenjuru merentasinya, manakala sesungut biru pendek berjuntai dari pinggirnya.

The sail of Velella velella helps it drift at an angle to the wind and occurs in two opposite forms. According to the US National Park Service, left-handed forms are usually found in the Northern Hemisphere and right-handed forms in the Southern Hemisphere; this is a general pattern, not an absolute rule.