Why do fish have vertical tail fins and whales have horizontal

Why fish have vertical fins, and dolphins and whales not? — Steemit

Whale Shark National Geographic

ELI5: Why are Fish and Aquatic Mammal Tails different? : r

Is It a Surprise? Humpback Whales! – Whales and Dolphins BC

Tails you win Sussex Wildlife Trust

What Is a Whale Fluke?

Why do marine mammals sway their tails vertically, while fish sway

Is It a Surprise? Humpback Whales! – Whales and Dolphins BC

A tail with horizontal flukes hi-res stock photography and images

Natural History Magazine