21. The shell of the lightning whelk on the other hand almost always opens on the right. 22. The report stated that female dog whelks still grow penises even after a ban on tributyltin. 23. True whelks are carnivores and scavengers. 24. Rock lobsters brought to Marcus Island were quickly consumed by the whelks , which outnumbered them. 25. One 17th-century shells of whelks , then piercing them with a hole before stringing them. 26. The knobbed whelk is a common predator of the foreshore mudflats as far offshore as 50 m. 27. True whelks are mostly marine ( with some genera freshwater ) gastropod mollusks in the clade Neogastropoda. 28. Perhaps the most famous Native bead is wampum, a cylindrical tube of quahog or whelk shell. 29. "Wampum " is a Wampanoag word referring to the white shells of the channeled whelk shell. 30. Today, due to environmental causes, harvested lightning whelks are significantly smaller than in precontact times.
