Published: Oct 05, 2011 9:11 PM EDT

WEST PALM BEACH, Fla. (AP) - A shrimp and a snake that were once known to make their home in Florida's waters may now be extinct.
    
A review by the U.S. Fish and Wildlife Service indicates the Florida Fairy Shrimp and the South Florida Rainbow Snake, two species not known to have been spotted in decades, may no longer exist.
    
The report to be published Thursday finds there was not enough information to proceed with Endangered Species Act protection on the two because information "suggests that the species are already extinct."
    
The filing doesn't amount to a formal declaration of extinction. Researchers could still come forward with information to prove the snake and shrimp are still in existence.

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