It has a flared shape, and grows to a maximum of 5 cm wide, but is often far smaller.

It has white lines that are oriented radially, sometimes extending onto the tentacles.

The lower portion of the column is a dull orange to bright red colour, with the upper portion being brownish, containing a round to ovoid verrucae in rows oriented longitudinally.

This species is found in Japan, and south to the waters of New Guinea and northern Australia.

The tentacles of Radianthus doreensis may either shrivel, or stick to the hand of a person who disturbs it.