Ocean contamination is one of the most serious issues facing our planet today, especially the proliferation of garbage.  Expect most people have heard about the "pacific vortex" - that huge mass of accumulated plastic and other debris.

Garbage, especially plastics, pose a huge threat to marine life and cause high mortality for turtles, seabirds, other birds, dolphins and whales.

Released balloons are a specific hazard because balloon plastic has a long life and if ingested strangles its victim, causing a slow and plainful death.