Tributyltin (TBT)

The adverse effects of TBT on shell formation in the oyster (Crossostria virginica):
	(a) a normal oyster shell and
	(b) a shell of an oyster exposed to TBT.

 

 

Demise of the dog-whelk, Nucella lapillus:

• Class Handout
• dog-whelk picture

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