I've always thought shellfish were ancient, like they have been around since the dinosaurs or something.
I bet shellfish back then were much larger than they are now. T-rex was just a glorified reptile after all.
Shellfish
Shellfish is a colloquial and fisheries term for exoskeleton-bearing aquatic invertebrates used as food, including various species of molluscs, crustaceans, and echinoderms. Although most kinds of shellfish are harvested from saltwater environments, some are found in freshwater. In addition, a few species of land crabs are eaten, for example "Cardisoma guanhumi" in the Caribbean. Shellfish are among the most common food allergens.
Despite the name, "shellfish" are not actually fish, but are simply water-dwelling animals. Most
poet, and of the sheepskin-costume appropriate for much of what was surrounding him.
"I am no sheep, I am no dog, No Councillor, and no shellfish – I have remained a wolf, my heart And all my fangs are wolfish."
Section XIII takes the traveller to Paderborn. In the morning mist a crucifix appears. The ‘poor jewish cousin’ had even less good fortune than Heine, since the kindly Censor had at least held back from having him crucified – until now,