Firstly they are not predators so have no need of speed or stealth to hunt food; they are herbivorous.
Secondly, while they can move quickly when they are frightened or attack they are heavy and cannot sustain long periods at high speed, for this reason they have no need to be streamlined.
whats a streamlined?
Yes it does it has a streamlined body
ELEPHANTS ARE NOT A STREAMLINED ANIMAL
Streamlined often means aerodynamic.
wATER BEING STREAMLINED.
penguin is streamlined to swim in cold waters
uTorrent is a streamlined torrent download program.
Their shape and aerodynamic efficiency makes them streamlined.
It was obvious he'd merely streamlined my report! Won't today's jets fly faster if they become more streamlined? This team will operate much more efficiently after I've streamlined it.
The cheetah is the most streamlined big cat.
They have a streamlined bonnet so that the air will be pushed over the car.
penguins bodies are streamlined to reduce drag in water so they can swim but sea anemone don't need to swim I think