Neptune Flood, a St. Petersburg-based insure-tech company, has begun offering coverage in Louisiana. Louisiana is Neptune’s 39th state. It is the second largest market for flood insurance in the United States given its unique geography and history of catastrophic flooding, Neptune said in a news release. Louisiana is key to Neptune’s growth, said Trevor Burgess, president and CEO, who outlined the company’s growth plans in an interview with the St. Pete Catalyst in December. Neptune is an all-digital, online flood insurance company that uses advanced computing power to quickly evaluate and price flood insurance policies.