A dark pink sea-foam that left pockets of the Fort Pierce Jetty sand and water with an almost red hue was created by a common and naturally occurring macroalgae called "ulva," according to the ...

A red macroalgae created the pink sea-foam, which southwest winds and currents pushed and concentrated into a cove-like area created by the south jetty and dogleg jetty. The swath was 50 feet wide ...