Dead whale shark washes ashore in southwest Florida

NBC - A dead whale shark washed up on Sanibel Island in southwest Florida.

Marina biologists believe the ten-foot long animal washed up either late Saturday night or early Sunday morning.

The whale shark's death has raised concerns about water conditions in the area, including red tide. Marina biologists say it's too early to know how the animal died.

More research is needed to determine if whale sharks are susceptible to red tide. Tissue samples will need to be collected for toxicology reports and the results could take anywhere from a few days to a week.