This is the legal description, according to OR 2630 / 3721, which does indicate the property going to the Gulf of Mexico:
EXHIBIT "A'
Commencing at the intersection of the West line of Government Lot 1, Section 28,
Township 3 South, Range 18 West, Walton County, Florida with South right-of-way of
State Road No. S-30A, 100 foot right-of-way, proceed 112 degrees 55'35" AZ (NAD 27
grid azimuth measured clockwise from North equals zero) 150 feet to Point of Beginning,
thence 181 degrees 55'01" AZ 460.00 feet to a point marking the Gulf of Mexico, thence
meander 112 degrees 55'35" AZ 238.79 feet, thence 2 degrees 01'01" AZ 459.69 feet to
highway, thence 292 degrees 55'35" AZ 239.65 feet to Point of Be ginning.