Volume 48 (1996) Number 2 
151 
Fig.3: Top; Photograph of the sea bottom with dense manganese nodule coverage. Most of the nodules have dia 
meters between 3 and 5 cm. Bottom: Bottom sediment with fewer but larger nodules. Here the nodule diame 
ters are up to 13 cm. Both types of sea bottom are found at the DEA and SEDIPERU sites. The photographs 
were kindly provided by H. Bluhm.