Duck feathers have evolved to be highly waterproof. Even when they dive underwater, their underlayer of downy feathers will remain dry.
Freshwater, unlike seawater, has low concentrations of dissolved salts. It occurs naturally on the Earth's surface in glaciers, icebergs, bogs, ponds, lakes, rivers and streams. Only about 2.5% of the water on our planet is fresh; the majority is saline and in the oceans. It's essential to life, though, providing us, and many animals, with drinking water.
Some animals rely on freshwater environments more than others though, with freshwater animals spending all or most of their time living in it, for example, fish, frogs and crayfish. Find out what other animals call freshwater habits home by scrolling through our archives below.
Fascinating facts about some of the world’s most amazing animals. From Aardvarks to Zebras our A-Z of the animal world is guaranteed to inspire. If your favourite animal’s not yet included, please let us know. Check out the Top 3 most loved animals! »
Many species of frog care for their offspring. For example some poison dart frogs lay their eggs on the forest floor so they can guard them and urinate on them to keep them moist.
Hippos bask on the shoreline and secrete an oily red substance, which gave rise to the myth that they sweat blood. The liquid is actually a skin moistener and sunblock that may also provide protection against germs.
The defense mechanism of adult Least Terns when intruders enter the nesting area, is to divebomb and defecate on the offender. This style of attack led them to be called “little striker.”
Newts have the ability to regenerate limbs, eyes, spinal cords, hearts, intestines, and upper and lower jaws!
Otters are playful, intelligent and inquisitive animals who are often seen enjoying themselves sliding around on muddy banks or in snow.
Don’t be misled by their tiny size, these tiny frogs are poisonous to the touch!