atlanticus preys on other, larger pelagic organisms: the dangerously venomous Portuguese Man o' War Physalia physalis; the by-the-wind-sailor Velella velella; the blue button Porpita porpita; and the violet snail, Janthina janthina.
Guy Velella | Velella |
After refit at La Spezia, Velella sailed on 25 November 1940 and passed the Strait of Gibraltar on 1 December for an Atlantic patrol to Bordeaux on 25 December.