What animals live in mussel shells
Shells are the hard parts of mollusks that give these animals stability. The shells on the beach almost always come from mussels, snails or octopus. Empty shells on the beach are often hundreds of years old, if not thousands of years. One can even find fossils that are more than 100,000 or millions of years old. Only if there is leftover meat in it or if the two shells are still hanging together in the case of mussels, you know that the animal was still alive recently. Squids have very fragile shells, they are never old.
Are periwinkles, whelks, collar moon snails and flaky thread snails known? There are dozens of snails that play a role in the mudflats or on the North Sea, naked or with houses. What most have in common are their funny names, but otherwise the world of marine snails is a colorful experience of colors and shapes.
Mussels are shellfish that protect themselves with two halves of their shell. Most of the time, the bowls are about the same size. Well-known species are the mussel, cockle and oyster.
Is this bowl left or right?
Most snail shell species turn right. However, some species of snail always have a house turned to the left. Very rarely can you find a snail shell that should turn right, but is turned left. These are real features and cup collectors are crazy about them. The direction in which a house turns can be checked by checking whether the opening is to the right of the center when you hold the snail shell with the opening facing you.
Huge growth in shellfish
The "giant growth" is a strange phenomenon. This occurs when a snail is neutered by a parasite. The snail can then no longer become sexually mature, which means that the hormone that is supposed to stop shell growth is not produced. This makes the snail shells much larger than normal.
Cuttlefish back shields
The skeleton of Sepias looks special. It's the back shield of these animals and when they die it's the only thing left. When walking along the beach, one can often find washed-up shields. Most people know it as sea foam that is hung in bird cages. The birds are crazy about it. The shield of a sepia is soft and the birds can easily peck the lime. With the extra lime they lay stable eggs.
Squids are highly developed mollusks. You have good eyesight. They are quick hunters targeting crustaceans, shellfish, fish and other squid. The different types of squid can be divided into two groups: the eight-armed and the ten-armed. The small eight-arm occurs in the North Sea. Otherwise there are almost only ten-armed species: sepias and squids.
Squid self defense
Squids are eaten by various species of predatory fish, dolphins, and humans. You have three ways of protecting yourself. On the one hand, you can swim backwards at lightning speed by switching on your ‘jet motor’. An octopus sucks water into its body cavity through the sides. If necessary, he pinches his body, causing the water to squirt out of a tube at the bottom. When this hard jet of water is pushed outwards, the squid shoots backwards. Second, they can eject a cloud of dye (ink). The ink takes the hunter's sight and turns off the sense of smell. And last but not least, they use camouflage: they change their color very quickly and take on the color of the surroundings. The sepia is also called the "chameleon of the sea". It is better to call a chameleon the sepia of the country ’.
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