The hippocampus has a strange shape, and its head is at right angles to its body. Swimming slowly in the sea like a horse's head. Its swimming posture is very special, its head is up, its body is slightly tilted, and it can swim freely in the water with the movement of its dorsal fin. When you are tired of swimming, wrap the tail with bending function around the stems and branches of seaweed to rest.

In addition, it is very interesting that it is not the hippocampus mother who is responsible for breeding offspring in the hippocampus family, but the hippocampus "father"-the male hippocampus, whose abdomen has an abdominal bag composed of skin folds. The female seahorse lays eggs in the abdominal bag of the male seahorse, fertilizes the sperm, and then hatches in the abdominal bag of the "father" until the baby seahorse is born. Father seahorse can give birth to hundreds of baby seahorses at a time.

Free swimming sucker fish

The sucker formed by the first dorsal fin of the head and back is long, with 22 ~ 26 pairs of lateral cartilaginous plates. The second dorsal segment is the same length as the base of gluteal fin, with 35 ~ 40 fins. The tail fin of young fish is pointed, and the adult fish gradually becomes concave fork-shaped.

Generally, the body length is 220 ~ 450 mm, and the maximum length is no more than 900 mm Although the swimming ability is poor, it is distributed all over the world. Mainly adsorbed on the abdomen of big sharks or marine animals with strong swimming ability, and sometimes adsorbed on the bottom of ships. It doesn't need to swim by itself, but is taken to the ocean of the world. When it reaches the sea area rich in bait, it leaves the host and eats. Then it will be adsorbed on a new host and continue to move to another sea area.

There are many kinds of sea cucumbers, such as black, brown and white. They like to live at the bottom of fine sand and rocks, surrounded by steady waves and algae.

Sea cucumbers live in the depths of the sea and can't swim. It just crawls on the seabed with the expansion and contraction of its legs and muscles. The crawling speed is quite slow, and it can only advance four meters per hour.

Special and wonderful protection technology: when the storm comes, it hides in the cracks of the stone. When insidious and cunning sailboats and greedy and ferocious sharks sneak up on us, the alert sea cucumber quickly ejects long intestines and branch-like scuba from the body cavity, so that the strong enemy can have a full meal and escape without a trace with the help of the recoil of discharging dirt. Sea cucumber not only has the unique skill of decontamination and confusing the enemy, but also has the function of "being in two places at once" like a starfish. Cut the sea cucumber into several sections and put it into the sea. After 3-8 months, each section will grow into a complete live ginseng. Some sea cucumbers also have the ability to cut themselves. When the sea cucumber feels that the external environment is not suitable, it can cut itself into several sections, and each section will grow into a new individual in the future.

Barracuda can swim dozens of kilometers per hour, and when attacking other animals, it is faster than ordinary trains.

Squid and octopus can suddenly spray water forward and use the reverse thrust of water to quickly retreat. Squid is what people often call "cuttlefish". It can spray ink-like substances into the water and pollute the surrounding seawater, thus taking the opportunity to escape.

Some shellfish can't move by themselves, but they can travel long distances under the boat for free.

Shellfish, also known as mollusks, is the largest group of crustaceans, ranking second in the animal kingdom, with more than 75,000 existing species. Put the shell opening (ventral surface) downwards and the shell top towards the viewer, so that one end of the shell opening is in front, the other end of the shell top is in the back, the left side is left and the right side is right. A shell that rotates clockwise is called right-handed, and a shell that rotates counterclockwise is called left-handed. Pick up the shell, with the shell on it and the shell opening facing the observer, and observe which side of the screw shaft the shell opening is on. If the shell opening is on the right side of the screw shaft, it is right-handed. If it is on the left, it is left-handed. The grain on the shell surface is a true record of the growth environment and speed, and it is a symbol of shellfish rings.

There are also some deep-water fish, which have their own luminous organs and swim like twinkling stars.

Most of the fish that can glow live in the deep sea, but there are fewer fish that can glow in the shallow sea.

Fish glow by the light-emitting organs on their bodies. The structure of these luminous organs is ingenious. Some have the function of lens, reflector and filter, which will refract light; The gland cells of some organs secrete luminescent substances. There are also some fish that emit light because they are attached with living luminescent bacteria, which will emit light during metabolism. The luminous organs of most fish are distributed on both sides of the abdomen, but some grow below the eye margin, on the back, at the tail or at the end of tentacles.

In the shallow sea on the west coast of the Pacific Ocean, there is a small fish belonging to the family Bufonidae. There are about 300 light-emitting devices on both sides of its body, which can emit strange brilliance. In the waters near Liu Ang Islands and Singapore Island, there is a small fish 55, whose luminous organs are distributed around the digestive tract. Due to the reflection of the swim bladder, this fish looks like a milky white electric lamp without tungsten wire. The light perch, which lives in the shallow sea of Malaya, can emit white and greenish light, much like moonlight reflected on waves; Another kind of light-eyed fish here can shine like a star, which looks like a star falling into the water.

Different fish will emit different colors of light, and the same fish will also emit different colors of light. Living in the deep sea? ? ? ? Fish, the end of the first fin of dorsal fin has a luminous organ, which can emit red, blue and white light, like a small lantern. There are two rows of luminous bodies in the abdomen of bottle fish, the upper row emits red, blue and purple light, and the lower row emits red and orange light. The light emitted by fish has no heat. It is cold light, also called animal light. They glow for different purposes. ? ? ? ? Fish glow to attract the opposite sex.

Special and wonderful protection technology: when the pine cone fish is invaded by the enemy, it will send out a "light curtain" to confuse, intimidate and warn the enemy. More fish give off light to look for food in the depths of the dark sea.

"Thirty-six Strategies" for Marine Animals

Ecstasy flat back and abdomen, wearing a helmet and armor all over, colorful, very beautiful. It usually likes to make holes in the muddy shallow seabed, only showing its head to observe the enemy's situation. Once the prey approaches, it quickly reaches out its big claws and splits its prey in two with a click, revealing its ferocious face. Interestingly, squid is not only good at "storming", but also knows how to "outsmart". They often turn their caves into hidden places, and even take the trouble to move sand and stones from afar and build several circuitous passages next to the sand caves where they live. Once other animals break in, it's like falling into a maze and trapping themselves.

Spiny sea urchins are everywhere in the tropical coral reefs that play hard to get. The spiny sea urchin is a famous "accusation of sea spines". Only when there are no spines around the mouth can it be considered as an "unguarded" area. But it grows on the bottom of the sea and lies on the rocks, and there is nothing other fish can do. Only smart scales can eat. Scales bite the spines of spiny sea urchins with their mouths, drag the sea urchins from the bottom of the sea to the surface, and then release them. But in the process of the sea urchin sinking slowly, the scales swam to the bottom of the sea urchin in advance, attacked its mouth and ate all the meat and viscera of the sea urchin. This method of playing hard to get is really interesting.

In tropical waters, beautiful anemones are often born with clown fish. Clownfish are not ugly. They are beautiful, brightly colored and beautifully dressed. They usually swing around anemones to attract the attention of other fish. When other fish attacked, the clown fish quickly got into the anemone, and the oncoming enemy fish was immediately anesthetized by the anemone's poisonous tentacles, which became a delicious meal in its mouth, and the clown fish took the opportunity to share it. This is their long-term relationship.

Plants:

1. Self-control (autotrophic): Scientists have found creatures on the seabed above 10000 meters. At such a deep seabed, there is huge water pressure, and because of the submarine volcanic eruption, the temperature is as high as 300 degrees, and a large amount of sulfur (compounds) overflows with the volcanic eruption. That is, using these substances, sulfide bacteria can get the energy to survive. Of course, this is just bacteria, so plants are certainly similar.

2. "Eat" other people's (heterotrophic): The plants you are talking about may be like this. They absorb and use the excreta of organisms in the upper water layer and the bodies of dead or dead organisms (sinking under the action of gravity) to obtain energy. This is actually the role of the solver.