Tuatara: Volume 12, Issue 3, November 1964
The sea-star Pentagonaster pulchellus is common in shallow water from Napier southwards. This photograph shows some of the unusual 4-armed nd 6-armed variants collected in recent years in Foveaux Strait by Thor Nielsen. The species varies in other ways also, and is at present under study as an example of extreme variability in a single interbreeding population. H. B. Fell. (Photo: M. D. King.)
The sea-star Pentagonaster pulchellus is common in shallow water from Napier southwards. This photograph shows some of the unusual 4-armed nd 6-armed variants collected in recent years in Foveaux Strait by Thor Nielsen. The species varies in other ways also, and is at present under study as an example of extreme variability in a single interbreeding population. H. B. Fell. (Photo: M. D. King.)