Dolphin

Several dolphin species have sexual dimorphism, which means that males are bigger than females. They have streamlined bodies and flippers on two of their limbs. These pleasant sea creatures appear to be smiling or laughing all the time, which makes us wonder what the joke is. As they leap through the air and into the water, dolphins have a terrific time.

Dolphins are among the most intelligent creatures on the planet. They've mastered the use of tools and created sophisticated communication systems with one another. They are also compassionate creatures. Dolphins will not abandon injured or weak members of their group; instead, they will assist them in reaching the surface and obtaining food.

These social, clever, and sympathetic creatures have a wonderful existence, which explains their constant smile.