"O Oysters, come and walk with us!" The Walrus did beseech. "A pleasant walk, a pleasant talk, Along the briny beach: We cannot do with more than four, To give a hand to each." - Lewis Carroll, The Walrus and The Carpenter Today is National Oyster Day . I have lately had a passion for oysters, raw and glistening on the half shell. Their brininess seems like the purest possible taste, the sea in my mouth, a gentleness against my tongue and palate that vanishes and leaves only a memory of the ocean. Yet I find them troubling, or, more accurately, I find my consumption of them troubling. Let me say here that I eat meat (and if you read this blog then this is no surprise to you). If that offends you please stop reading now; I am not interested in converting you or being converted. I eat meat mindfully; I have been a vegetarian. I find I am healthier and happier if animal protein is part of my diet. I am grateful for the animals I have eaten and will eat. Equ...