Yes, they do.
because seals need to hunt for fish, and to swim faster, they have evolved so that their body has changed and became streamlined. having streamlined bodies makes seals swim faster and can change direction better, making it a more efficient hunter and some diarrhoea
It is to swim faster when it is catching their prey and running away from its predator. Its streamlined body shape helps it to swim faster.
It is to help reduce water resistance and friction between the water and the seal,allowing it to swim faster to escape from its predator or to catch its prey.
they have streamlined shaped body like structure.
the shape which is narrow in the beginning and broad in the middle is called a streamline shape. fishes have streamlined shape which makes their movement in water easier and helps to reduce water resistance.octopuses do not have a streamlined body but while moving it makes a streamlined body .boats ,fishes,airoeplanes etc have streamlineshape.
its a streamlined in shape and are mostly warm blooded
Feather
No. Some animals( example. Puffer fish) don't depend on speed so they don't have streamlined body shape. Other fish that depends on speed to catch fish or running away from predator have streamlined body shape so that they can swim faster.
Yes. Like many semi-aquatic mammals, the platypus has a streamlined body. This enables the platypus to swim and dive faster.
Yes, seals have flippers that are adapted for swimming in the water. These flippers have a streamlined shape with webbed digits that help them navigate and propel themselves through the water efficiently.
Yes, penguins have a streamlined body shape that helps them glide efficiently through the water while swimming. Their shape reduces water resistance, allowing them to move swiftly and catch fish underwater.