kendemyer
Dr. Macht who's study was published by John Hopkins studied 88 animals in regards to toxicity levels and found that the clean animals in the Mosaic code were non toxic and the unclean animals were toxic. Dr. Macht studied quadrupeds, birds, and fish (a clean fish was one that had fins and scales).
This is easily explained by the simple assumption that any food that was toxic produced either death or extreme illness and as a consequence was written into mosaic code as a food to be avoided. Divine intervention is not necessary in order to explain this.
on the west coast of B.C. is a phenomena known as "red tide" which occurs at certain times and results in a rise in toxins in shellfish.
Indeed, one of the hardest hit areas is along the relatively pristine coast of British Columbia where in 1989 a quarter of a pound of contaminated mussels was found to contain enough toxin to kill 16 people.
So during red tide the simple rule of thumb followed by people is to not eat these shellfish.To be completely clear it is often found that toxin levels do not necessarily result in a red tide but the implication is clear as to the response of people to such a threat.No divine revelation needed just an awareness of correlations between events and resulting health of the public [or tribe in the case of moses].
"For the mind of man is far from the nature of clear and equal glass,wherein the beams of things should reflect according to their true incidence;nay,it is rather like an enchanted glass,full of superstition and imposture.if it be not delivered and reduced." Sir Francis Bacon