Today is Sunday, Feb. 17 and I have never seen so many Cannonball Jellyfish in my life. Last week I saw one of these jellyfish washed up on Melbourne beach and thought it was cool.  The week before that I saw 2 Portuguese Man of War, but this morning they were literally scattered about every 4-to-5 feet. 
As far as the eye could see, they covered the beach in astonishing numbers.  
The Cannonball Jellyfish is also known as the Cabbage Head Jellyfish.  It is very similar to the shape and size of a cannonball so that is how it acquired that name. Its dome-shaped bell can reach up to 25 centimeters in diameter, and its rim is usually colored with brown pigment. Cannonballs are the favorite prey of the Leatherback Sea Turtles.  They are found from North America’s eastern seaboard all the way to Brazil, but they are also found in parts of the Pacific.  
Jellyfish tend to travel in groups called blooms, and sometimes rough winds, swells and currents send them to shore at once.  Cooler water temperatures also contribute to the early spring kill-offs. 
Biologists suggest that they are often the victims of the current, and others are just killed by the annual population cycles. I am reminded of a jellyfish we saw in Jamaica, after a few hours in the sun it turned into a little pile of salt. That was quite surprising, but nothing compares to the massive kill I saw this morning. 
God bless you all -- RHM