Collecting Other Shellfish

Moon Snail

Moon Snails are commonly eaten as Scungilli. They are sometimes very common offshore; more than that I can't say.



Conch

Large Whelks are sometimes eaten as Conch, but these are most often collected in bay waters.






clam

Clams live beneath the surface of the sand and would be difficult for a diver to collect.






Oysters are also found in shallow bay waters. Oyster diving in the Chesapeake Bay is a wintertime way to get in the water.


Delaware Water Gap Bottles

Glass is a hard substance, usually brittle and transparent, composed chiefly of silicates and an alkali fused at high temperature.

Composition and Properties of Glass

Most glass is a mixture of silica obtained from beds of fine sand or from pulverized sandstone; an alkali to lower the melting point, usually a form of soda or, for finer glass, potash; lime as a stabilizer; and cullet ( waste glass ) to assist in melting the mixture. The properties of glass are varied by adding other substances, commonly in the form of oxides, e.g., lead, for brilliance and weight; boron, for thermal and electrical resistance; barium, to increase the refractive index, as in optical glass; cerium, to absorb infrared rays; metallic oxides, to impart color; and manganese, for decolorizing.