Those animals are almost completely blind yet they have 22 tentacles around their nose with 25,000 sensors, which makes their sense of smell extremely sensitive even smell underwater.
The blobfish doesn’t have bones, teeth or much muscle either - it has a very slow lifestyle and spends its whole life crawling along the sea floor sucking small sea creatures like shellfish or crabs.
The Irrawaddy dolphin has a very unique look with a round face among one of its main characteristics. These animals are not considered to be in danger of extinction, yet they are relatively rare and only live in a few areas of the world.
The hair which gives this crab its name scary but practical. They actually eat the tiny microbes that grow on it. They live near the very hot hydrothermal vents in Antarctica which make their life a constant adventure - one wrong move could mean being boiled or frozen.