Re: Ballast Stones?

[Ronald Orenstein <ornstn@inforamp.net>]

At 10:15 PM 8/13/97 -0400, you wrote:
>Stones have been found in the stomachs of penguins and otariids (the eared
>seals: sea lions and fur seals) and is implied in fossil remains of
>plesiosaurs (so I understand), but they are not found in cetaceans,
>phocids (non-eared seals), ichthyosaurs or mosasaurs. Mike Taylor noticed
>that the difference between the stone swallowers and the non-stone
>swallowers was that the former used their pectoral "flippers" to attain
>underwater "flight" through the water whereas the others use their tails
>to swim through the water. 

How about sea turtles?  They certainly are pectoral-flipper swimmers - do
they swallow stones?
--
Ronald I. Orenstein                           Phone: (905) 820-7886
International Wildlife Coalition              Fax/Modem: (905) 569-0116
1825 Shady Creek Court                 
Mississauga, Ontario, Canada L5L 3W2          Internet: ornstn@inforamp.net