I have heard of resorts and cruises offering sea turtle "release" experiences to unknowing tourists. This is of course illegal, the only organization authorized to do anything with sea turtles is the official government ecology organization (Ecologia Cozumel).
www.theyucatantimes.com

Sea Turtle theft and depredation on Cozumel beaches under investigation - The Yucatan Times
Allegedly, Cozumel City Hall employees profit from stolen specimens. The National Commission of Protected Natural Areas (Conanp) is investigating the removal of turtle hatchlings from Campo Torguero by employees of the Cozumel City Council to present a liberation show for which they are paid in...
