Ruin your kidneys

To date all marine birds tested have been capable of ingesting and excreting within 12 hours sodium chloride in amounts equal to one-tenth of their normal body weights.

--F.G. Cooch, A preliminary study of the survival value of a functional salt gland in prairie Anatidae.

Alamak. That's like me eating 5kg of salt. I don't think I could do that even if it was in a palatable form, say like canned fried dace with fermented black beans...

Okay, okay, 5.2kg.