Bubble slime

Have you ever felt underwater travel was too dangerous or too slow,do you ever wish you could bounce around in the ocean,well the bubble slime would be a mob that spawns in there ocean (more prominently in warm ocean due to heat causing more bubble) you can tame them and hop inside them to bounce around the ocean floor without a care in the world (bubble slimes will only do this for an hour after an hour it gets tired and need to rest for 20 minutes) if the bubble slime touches land it will pop! These things can float on water and sink down into the ocean once tamed and are lured by sea pickles which you would use to tame them,this could work as a good alternative to adding a submarine(bubble slimes cannot breed)