Juvenile Banggai cardinalfish with sea anemone, Lembeh Strait, North Sulawesi, Indonesia

Dive deep beneath the waves surrounding the Banggai Islands in Indonesia and meet the Banggai cardinalfish. Cardinalfish can grow up to 8 centimetres and have tiny shimmery bodies with black vertical stripes and white-edged fins, which help them disguise. Unlike some finned creatures that migrate long distances, these pint-sized fish inhabit a small world, rarely straying far from their local reefs.