In south Florida at this time of year we see lots of beached Portuguese man-o-wars. They can sting like a jellyfish, but are actually a “colony” of 4 separate polyps that all live together. Often just the bladder remains, but sometimes they’ll still have their full array of tentacles, which can reach 10 feet (and will most definitely still sting you if you touch them)
We have something similar on the west coast. Thing just floats around wreaking havoc. Nobody can say for sure how big the colony is. We call it the great pacific garbage patch.