What is the best way to search a beachfront property?

I'm trying to get an idea of a possible site of a school. The school will be located in Florida, and one of the criteria I'm looking for is access to the beach property. But, given the number of condos in the Sunshine State, I am having a difficult time locating anything larger than a small residential lot. Are there any websites out there. 

• That can help me with the search for such specific criteria?. 
• Or do I have only to persevere in local web sites of real estate?

What you can do

Get a real estate agent. Some zoning is required for schools, so I'm sure he'll be limited in where you can create this type of development. Call the schools in the vicinity and ask them what real estate agent are used to represent your purchase. Go to the creation of local planning and zoning out what is needed for your specific project.

Realtor.com Is the only website which, of course, the unions at the offices of the local MLS and ads.