Published: Nov 30, 2011 6:20 PM EST
Updated: Nov 30, 2011 10:43 PM EST

SANIBEL ISLAND, Fla.- The effects of an increasing red tide developing off the coast of Southwest Florida.

The results from the latest water tests are expected Wednesday, but beachgoers say the impact of the algae blooms are very evident right now.

Lighthouse Beach is flooded with dead sea creatures from dead sharks, to fish, crabs and coral. It looks bad and smells worse. Beaches across Southwest Florida have been reporting fish kills for the past few days.

The latest results from the state, which are from last week, say at last check, the red tide was stretching about 30 miles along the shore from Sanibel Island down to Collier County.

Out-of-town visitors say the effects are very clear. Officials say while the algae is clearly dangerous for sea creatures, humans don't have much to worry about. People with respiratory problems may be the ones with the most sensitivity to this, with symptoms of coughing and a runny nose.