• Tagged algae, algal blooms, bioluminescence, ecosystem, environment, harmful algal blooms, phenomena, phenomenon, Red Tide, science

While you might not stop to think on it, water is full of algae and aquatic microorganisms that play a vital role in marine and fresh-water ecosystems. Not all algae is harmful, but when microscopic algae grows too quickly, then it can cause a phenomenon commonly called “red tide.” Scientists prefer the term algal blooms. Not all of these “red tide” algal blooms are red or dangerous, some even appear to glow with bio-luminescence, but harmful algal blooms can poison shellfish, fish or other wildlife. It’s no longer cool to call these “red tides” because red tides are very often not red; many have no discoloration at all. Red tide also is not the same thing as the wide variety of algal bloom species that are often mistakenly called red tides. Yet when the water appears blood red, which is rare, and dead fish are floating on the surface or the beach, then it freaks people out and rumors start flying about the “end of the world.” There are varying opinions about if it is “safe” to swim in a “red tide” which often comes in a rainbow of algal bloom colors . . . and shades of harmful algal bloom. Would you swim or fish in these waters? [38 Photos]