Marine cats are slightly larger and faster than normal cats and tend to be longer-lived as well. Most tend to be female, so males are both rare and valuable.
Coloration resembles that of regular cats, with a tendency toward dark shades and bright eye colour.
Marine cats are occasionally born with Legacies, but they never require cinnabryl . They always acquire Legacies such as Swim, Breathe Water, or another similarly water-oriented Legacy. Such marine cats are very rare, and sailors consider them even luckier than normal. No vessel captain would dare part with such a cat. They can be very nasty if threatened, often aiming straight for an opponent's eyes.