>>281316279
Because it is actively chasing individuals instead of a large mass and it uses tentacles to actively grab prey. Its hunting mode seems closer to a cuttlefish or octopus, using camouflage and then jumping to attack a relatively large prey. Jellyfish mode is to just be hard to detect and waiting until something bump on your tentacles. A cuttlefish is a diver fishing with a harpoon, a jellyfish is fishing with a fishing rod and a blue whale is a large ship fishing with a net. This creature is fishing with a harpoon, a large ship can’t sustain itself fishing with a harpoon unless it hunts something really big (whaling)