Scanning Electron Microscope (S.E.M.) of a cross section of a baleen plate, showing the tubes that run the length of the plate. The colour is false.

SEM cross section of baleen
©Aberdeen University/Martyn Gorman & Kevin Mackenzie
S.E.M. cross section of a baleen plate

Martyn Gorman   ·   University of Aberdeen   ·   Department of Zoology ·   © 2002