Fig. 1From: Copepods grazing on Coscinodiscus wailesii: a question of size?Micrographs of Coscinodiscus wailesii, the largest diatom commonly found in the North Sea (mean diameter at the time of this study: 380 μm). Micrograph a shows an intact cell, while in b the cell was locally damaged with a needle. In response to this treatment the protoplasma concentrates on the side opposite to the point of damageBack to article page