Based on the dolphins, (mammals of the ocean), why is it recommended that women who are going to
become pregnant, are pregnant, are nursing and/or
young children, not eat seafood and shellfish in large
quantities or more than 1x per week?

Raw shellfish may be contaminated with harmful bacteria and viruses, and therefore carries a higher risk of food poisoning.

Explanation:

You’re naturally more susceptible to food poisoning during pregnancy because of changes to your metabolism and circulation, and as well as being unpleasant for you, food poisoning can increase the risk of premature delivery and infections in your baby

"d.) carbon dioxide and hydrogen sulfide"

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