Starfish digest their food by putting their stomachs outside their bodies. This allows them to eat food beyond small crevices and even large pieces of food.

Gentoo penguins are the fastest swimmers among penguins. The average speed of king penguins is about 8 km/h.

The melon organ is made up of fatty tissue, not brain.
It is so called because this fatty tissue resembles the appearance of a melon.
It acts like a lens that converges sound in one direction & radiates it forward.

Unlike fish that use their tail fins, seahorses swim with their dorsal fins without swinging their bodies, allowing them to move smoothly through coral reefs and seaweed. Their small movements do not attract the attention of foreign enemies.

The maximum is about 7 to 8 years. However, very few sardines live this long in the harsh natural world. Most are eaten by other creatures.