A spineless fellow with biggish ears and a fondness for squidgy environments has been hanging about around Whangarei coastal spots.
Department of Conservation marine ranger Marie Jordan said a number of sea hares, (Aplysia species), sometimes called sea slugs, had been turning up at Ngunguru and other estuaries in recent days.
They live on the seabed at varying depths but it is not unusual for them to be found washed up on the high-tide line.
Reasons this happens in some years might include raised water temperatures or changes in the food chain.
Sea hares are not toxic, commonly grow to about 30cm, have a typical slug-like feel on the outside, a soft internal shell, and a sucker foot underneath.