Shells from a long distance away?

[kenny396]

 Thank you Dave, but what I was interested in was how far the just the shell of the dead animal might travel in this area in particular, and others as well. There is as much as a 17 to 18 foot tide down at this end of the sea of Cortez, twice a day, and some of these shells are unfamiliar to people who have been in this area for many many years.

Thanks again;  Kenny