Platypuses are not marine vertebrates. They can only live near fresh water.
The platypus is a mammal, specifically a monotreme.
yes, a platypus a is a vertebrate. all mammals are.
It is a vertebrate because it has a spinal column in its skeletal system. Also it is a mammal, although it lays eggs, and every mammal (or other warm-blooded creature, like a bird) is a vertebrate.
The platypus is not an invertebrate. It is a vertebrate, a member of the Kingdom Animalia. It is a mammal, specifically a monotreme, or egg-laying mammal.
It is a mammal and all mammals are vertebrates because they have internal skeletons and backbones.
No it is a marine gastropod (snail).
No. The whale is a placental marine mammal; the platypus is a semi-aquatic monotreme, or egg-laying mammal.
They are both vertebrate warm blooded animals that both lay eggs.
It isn't a "marine mammal" because it doesn't continuously live in salt water. A dolphin or whale, which never come ashore, is a "marine mammal". A platypus is an amphibious mammal, meaning that is capable of functioning in the water or on land.
Yes it's a vertebrate
No, a platypus does not have scales. It has dense, sleek, waterproof fur.
The platypus is in the mammal classification. It is a monotreme, or egg-laying mammal.