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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:
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oa METAL SCReilNlNfe
vShALL HAND
DREDGE
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Figure 20. Dredging and collecting gear.
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