Synodus foetens
Size: to 18"
Habitat: almost anywhere, but favors shallow waters
Notes:
You will find these at night in the river, perched on their fins, with alligator-like jaws studded with teeth waiting for some unfortunate killy to come by. Spook it, and the Lizardfish will dart away too fast to see.
Jellyfishes are free-swimming relatives of corals, anemones, and hydroids. In fact, in many cases, they are the same species, just in a different stage of life! Not all medusas ( as jellyfishes are called ) have a corresponding polyp stage, and likewise, not all polyps have a corresponding medusa stage, but most alternate generations in each form. Small jellies ( up to 1" across ) are most likely the medusa stage of some hydroid, while large jellies are usually the dominant stage of a species in which the polyp stage is almost absent. Even anemones have a periodic medusa stage, although it is infrequently observed.
Although jellyfish can swim slowly, they are largely at the mercy of the tides and currents, and at times large numbers are concentrated into bays and may be stranded on beaches.
More: True Jellyfishes ...
