TREASURE HUNTERS ARE SEARCHING FOR WHAT THEY HOPE MIGHT BE A SHIP FROM A GOLD-FILLED FLEET THAT GAVE THE TREASURE COAST ITS NAME. THE FOUR-PERSON CREW OF A LIFT BOAT NAMED THE POLLY-L IS LOOKING FOR HISTORICAL ARTIFACTS RELATED TO A SHIPWRECK POSSIBLY FROM THE 1715 SPANISH TREASURE FLEET. OFFICIALS WITH THE AMELIA ISLAND-BASED AMELIA RESEARCH AND RECOVERY TEAM FIRST SURVEYED THE SHALLOW WATERS OFF HUTCHINSON ISLAND FOUR YEARS AGO FOR A STACK OF CANNONS THAT A LOCAL SURFER DISCOVERED ALMOST 30 YEARS AGO. DOUG POPE, THE PRESIDENT OF AMELIA RESEARCH AND RECOVERY, CAPTAINED A FOUR-STORY-HIGH BOAT DOWN THE INTRACOASTAL WATERWAY IN FORT PIERCE ON MONDAY. TWO MEN WORKED WITH THE STATE TO SECURE NECESSARY PERMITS TO DIG OUT AND IDENTIFY 42 TARGETS THEY FOUND DURING A 2005 SURVEY ABOUT 200 YARDS FROM THE BEACH.