Wrongful death — Maritime law — Death on the High Seas Act does not apply to a death that occurred more than three nautical miles from coast of Florida, but still within Florida’s territorial waters — Trial court erred in dismissing wrongful death action upon determining that action could only be brought under Death on the High Seas Act in federal court where there was factual issue as to whether death occurred in Florida’s territorial waters — Florida state courts have concurrent jurisdiction over Death on the High Seas Act claims