Well, if not big, then certainly many!
Pictured is a Goniada multidentata (you guessed it, “many toothed”!), photographed in a Scanning Electron Microscope (SEM). The lower photo has been coloured afterwards to better show the placement of the teeth.
Don’t worry though, the whole animal is only a few millimetre long, so you are not on its menu!
The species was first described in the yearbook of Bergen Museum (now the University Museum of Bergen) in Arwidsson, Ivar. (1899). Studien über die Familien Glyceridae und Goniadidae. Bergens Museums Aarbog. 1898(11): 1-69, plates I-IV., which is available online at http://www.biodiversitylibrary.org/item/130141#page/257/mode/1up
This specimen was collected by the R/V “Dr. Fridtjof Nansen” and has been identified as part of our MIWA-project. We’re working on a poster on the diversity of Glyceridae and Goniadidae of the region that will be presented at the 12th International Polychaete Conference in Wales this summer.