The purple tremoctopus, also known as the soaring octopus Tremoctopus violaceus, is a fascinating sight! It is also called a carpet octopus or a blanket octopus - depending on what exactly the thin multi-colored membrane between the outstretched tentacles reminds the observer.

In this way, the octopus tries to appear larger and scares away predators. Only female carpet octopuses have a beautiful outfit; males do not need it - after all, they do not grow more than three centimeters, but females reach a meter in length, and together with the bedspread - two meters.

Having no veil and impressive size, male violet tremoctopus are insensitive to the venom of one of the most dangerous jellyfish, the Portuguese man-of-war. That is why they, holding with suction cups, carry with them pieces of the burning tentacles of poisonous jellyfish and, if necessary, fearlessly attack the enemy with them, like a sword. The venom of jellyfish is very strong, it kills fish in seconds!

Here you can see two female Tremoctopus violaceus taken by a diver in the Philippine Islands area

Nautilus Pompilius Nautilus pompilius - yes, yes, the same one! Unless he sings.

But this cephalopod can, by adjusting the amount of ammonia ions in the chambers of the shell, sink or rise - the principle that is used in modern submarines was invented by him hundreds of millions of years ago.

Most modern cephalopods lack shells and have elongated bodies with a small number of cephalic tentacles. At the same time, in the Paleozoic, hundreds of millions of years ago, ammonites and nautiloids flourished, with well-developed external shells and numerous tentacles.

The dominant ammonites in past geological epochs became completely extinct, but a small number of nautiloid species managed to survive and persist in the tropical regions of the Pacific and Indian Oceans. For this reason, nautilus, along with coelacanths, horseshoe crabs and some other species, are called “living fossils.”

Ancient nautiluses grew up to 3.5 m, but today's ones only grow up to 25 cm - but thanks for the fact that they survived!

The leafy sea dragon is a type of charismatic sea creature belonging to the genus Phycodurus.

Externally, the leafy sea dragon resembles a dragon: it has a curved body and thin processes on which flat fins grow.
It needs these fins to move and camouflage itself with its environment.

The dragon moves only with the help of two of them: the chest and the back. But thanks to its fins, it can reach speeds of up to 150 m/h.

The subtleties of nature never cease to amaze ?

Take a close look at the complexity and accuracy of this reef crab during feeding.