My guy @kenny.regan
here got as animated as is possible underwater when he saw this lion’s mane jelly. After motioning for me to come quickly, I realized his excitement was about the “friend” living among the jelly’s stinging tentacles. These types of symbiosis are always fascinating, especially in the ocean. Typically, a medusa fish lives with a jelly and they live together successfully, and mutualistically (mutualistic symbiosis) by offering advantages to each other. In contrast, this is a juvenile prowfish lives with jellies because jellies are their main prey during this stage of life. This is known as a parasitic symbiosis. Boom. Once they become adults, prowfish tend to be benthic and live on and in rocks. I sadly did not take any video of this encounter, to Kenny’s dismay, but on the bright side, after the dive he learned the important underwater signal for roll video.