Collecting A7nerican Seashells 59 



species are found nowhere else. Breaking apart coral blocks often reveals 

 interesting rock-boring clams. 



DREDGING AND TRAPPING 



There are few active shell collectors who have not given serious thought 

 to trying their hand at dredging. This is especially true if one has spent sev- 

 eral summers in one locality and acquired a large and representative collec- 

 tion of the littoral and intertidal species. Over half of our American species 

 prefer to live below the low-tide mark and, although storms occasionally 

 cast up samples of this rich fauna on our beaches, trapping and dredging are 



SAFETY REuEftSE: 



OF TyJlNE oa STR\N& 



/a- INCH IftOM 

 YOKES 



UONaER 

 YoKt 



vShALL HAND 



DREDGE 



^ 



BA& OF (NETTING. ' / 

 oa METAL SCReilNlNfe 



"Lu" 



DREDGING 



WATEK GLASS 



Figure 20. Dredging and collecting gear. 



