Jolly Roger Cap The Jolly Roger cap displays our own creative version of the pirate flag. Ours symbolises the good pirates (Sea Shepherd) who pursue the bad pirates (driftnetters, whale killers, seal killers, poachers and people like Glenn Inwood). Created by artist Geert-Jan Vons and co-designed with Captain Paul Watson, the logo's intricate design includes the shepherd's staff which represents the Sea Shepherd movement and the trident which signifies both Neptune and Sea Shepherd's interventionist approach. The skull represents the death that humans inflict on the creatures of the sea - it is further detailed with the dolphin and whale "yin yang" symbol in the forehead of the skull. Get one!