Flabellina pedata by Paul Naylor Violet sea slug + - Despite its dazzling colouration, this fabulous nudibranch can be easily missed, due to its small size! Scientific nameEdmundsella pedata When to seeApril – October. Top facts Category Sea snails and sea slugs StatsUp to 5cm long.Common. AboutEggs are laid as a thin, white thread and can sometimes be easier to spot than the sea slug itself!What to look forA very small nudibranch with striking violet/pinky-purple colouration, with white tips to the projections running along its back.Where to findFound around all British coasts.Did you know?All nudibranchs are sea slugs, but not all sea slugs are nudibranchs!