Costasiella sp. #3
|Photo: Roney Rodrigues: west shore, Oahu; Feb. 26, 2021.
|shows a very young animal with black pigment extending the full length of its rhinophores
Photo: Roney Rodrigues: west shore, Oahu; March 7, 2021.
very young, transitional
|shows a slightly older animal in which the "bracketing" black lines on the rhinophores are just starting to develop
Photo: David Rolla: west shore, Oahu; March 27, 2021.