Thanks for the approval, guys! Since no one seems to be arguing, I'll go with the current choice.
EVOLUTION ATTEMPTS: Movement-2, Mobile larval stage-5 Increase height-6
Evolutionary success- 5
The seafloor blob has evolved these past few million years. Many types of blob have appeared, but our species has become the tentablob. They have grown massive compared to the other blobs, at 30 centimetres tall, a rival to even the frondblobs (which are rapidly being outcompeted by the descendants of the seafloor blob). It has a basic muscular system, although the pinnacle of its movement abilities as an adult is to pull an edge out from underneath other blobs. The real reason for its success is its advanced tentacles. It gives it a larger surface area and reach than other blobs, too, but it also evolved a defined reproductive system. Male cells are attracted to the bases of the tentacles, which then develop into tiny tentaclets. These spread their yet-to-be-defined tentacles as a parachute, which they catch the currents with, and they drift far from the space next to their parents. This means that tentablobs spend less time competing with parents and more time beating up the competition.
The other blobs that changed, though, are causing problems. A blob with a more successful muscular system, the aciblob, is the most worrying. It has adapted to crawl over the surfaces of other blobs and digest their surfaces. Frondblobs have mostly receded into the depths of the reefs and become funguslike, although there is still a titan amongst the creatures of the ocean, a frond that grows up to 3 metres tall. Other fronds still exist, though.
GENERATION 2:
Tentablob
A dark brown blob of jelly that usually enjoys the best positions in the reef. Their long tentacles take food from the water. They grow up to 30 centimetres tall, and their offspring are called tentaclets.
REPRODUCTION: It lets out male cells in the current, and growths grow on the bases of the tentacles. These growths eventually become tentaclets, tiny parachute-like organisms that drift on the current to a better location.
MOVEMENT: They can move enough so they don't get buried.
EATING: It absorbs cells that are drifting on the current.
PREDATION: No meaningful prey. Aciblobs sometimes attack them, leaving gaping wounds.
COMPETITION: Tentablobs have little competition, even amongst themselves, due to their size and reproductive system.
ENVIRONMENT: A shallow sub-tropical sea. Layers upon layers of various types of blobs have built massive networks of reefs. Tentablobs grow above the rest, filtering food from the open water. Aciblobs, 3 or so centimetres wide, create open space for new blobs through their grazing of the small.