As we are all enjoying the super warm weather and water over the past several weeks, you may have come across some of these jellyfish-like creatures. They are called salps. They are present in our waters as of late because of phytoplankton blooms. This is their food source. The black/reddish dot in the center of them is their digestive system, and they are completely harmless.
According to Wikipedia, salps appear similar to jellyfish because of their simple body form and planktonic behavior, they are chordates: animals with dorsal nerve cords, related to vertebrates (animals with backbones)… Which means that they are more closely related to humans than jellyfish!
Remember… Always swim near a lifeguard!