About this flag

Blue Triangle Butterfly

• Element 1: Emblem

  Aesthetics - photoreceptors

  Blue Triangle butterflies possess 15 classes of vision cells, known as photoreceptors – the highest number for any species (humans have four). All the photoreceptors are used at the same time, sensing colour, brightness, movement and shape. They cannot see as clearly as human eyes, but are better at seeing a wide panorama, fast movement, polarisation and grades of colour.

• Element 2: Pattern

  Miscellaneous - photoreceptors

  Blue Triangle butterflies possess 15 classes of vision cells, known as photoreceptors – the highest number for any species (humans have four). All the photoreceptors are used at the same time, sensing colour, brightness, movement and shape. They cannot see as clearly as human eyes, but are better at seeing a wide panorama, fast movement, polarisation and grades of colour.