EVERYDAY SCIENCE

Detailed explanation-1: -Another example of analogous structures are dolphins and sharks as whole species. Although we might think of dolphins and sharks as being relatively similar, their morphology says otherwise. Dolphins are mammals that have live births and have fins with a homologous structure to human arms.

Detailed explanation-2: -Their streamlined bodies, dorsal fins and flippers are the result of convergent evolution. Since dolphins and sharks occupy similar niches and face similar challenges, similar adaptations have been advantageous to them, resulting in their analogous structures.

Detailed explanation-3: -Dorsal fins of sharks and dolphins are analogous structures. Sharks are cartilaginous fishes, whereas dolphins are cetacean mammals. These two groups are related, but distantly.

Detailed explanation-4: -Flippers of penguin and dolphin have a similar function (helps in swimming) but different origin so they are called analogous organs.