Platypuses have a body covering of velvety fur.
All species of dolphins have a body covering of skin (not scales). All mammals have a covering of skin, usually combined with hair in some form. In the case of the dolphin, the uppermost layer of the skin produces an oil which forms a film that covers the dolphin's whole body.
aquatic mammals EG: platypus & Dolphin
The platypus has a body covering of velvety fur which is dense and waterproof.
feathers
this is sombody
Like many semi-aquatic mammals, the platypus has a streamlined body. This enables the platypus to swim and dive faster.
FUR
Fur or hair.
fur
Yes. Like many semi-aquatic mammals, the platypus has a streamlined body. This enables the platypus to swim and dive faster.
Hair, the same as on a horse.