Tritoniid from the Philippines

March 22, 2004
From: Paul Whitehead

Dear Dr. Rudman,
This nudibranch, which I believe is your Tritoniid sp. 8 was seen on Nov 19 2003 at 20 meters on the El Dorado House Reef [dive guide Ricco], Dumaguette, Philippines, as photographed. Site was interspersed with various coral outcrops on volcanic sand.

The creature was approx 30/40 mm in length

Paul Whitehead

Whitehead, P., 2004 (Mar 22) Tritoniid from the Philippines. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Paul,
Tritoniid sp 8 is now got a name. It is Tritonia bollandi, which as you'll see in a message I am posting today [#12283] is a uniform translucent white or orange colour with an opaque white line around the mantle edge. Your animal also has more finely divided gills and oral veil papillae, and has a symmetrical pattern of light and dark patches and diagonal bands.

Marshall & Willan (1999) record this animal from the Great Barrier Reef as Tritonia sp 1. I will call it 'Tritoniid sp 9' on the Forum.

• Marshall, J.G. & Willan, R.C., 1999. Nudibranchs of Heron Island, Great Barrier Reef.

Best wishes
Bill Rudman

Rudman, W.B., 2004 (Mar 22). Comment on Tritoniid from the Philippines by Paul Whitehead. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Tritoniid sp. 9