In daily life, in the process of aquaculture, it is difficult for us to see the creatures in the water with the naked eye. It is only roughly known that water is entirely the world of living organisms, and even a drop of water may be the home of these organisms. Let's take a look at these mysterious creatures!
This photograph was taken by Jan Michels from Kiel, Germany. The creature in the photo is a marine copepod called Tempora longicornis, which is the photographer's effect of magnifying 10 times the original volume of this creature.
This is 320-fold magnification of the diatom rosary linear algae, photographed by photographer Frank Fox from Terre.
This is an algal biofilm taken by Jonathan Franks from the University of Pittsburgh, also known as the "green algae layer", which looks a lot like a work of art from the photo.
This is a photograph of Philodina rose rotifers by Dr. Michael Shribak and Dr. Irina Arkhipova from the Marine Biology Laboratory. It is usually found in ponds where birds live or in small freshwater ponds.
This is a water fleas photographed by Dr. Ralf Wagner, and it is shown on both sides of the green algae. The hydra is a miniature, transparent crustacean.
This is a scene of an underwater "clash" filmed by Charles Krebs. At this point, a hydra is catching hydra, and this photo magnifies their "clash" scene 40 times.
This is one of the deadliest pests of the human body, the mosquito, photographed by John H. Brackenbury from Cambridge University. This picture is of a larval mosquito growing in a water droplet.
It's a scene of two freshwater ciliates mating, and the photographer magnified them 630 times to look like two colorful palettes.
This is a photo of a water fleas magnified 100 times. Each part of the body of the hydra can be clearly seen from the photo, and the intestine divides its body into two parts. The transparent circle in the center is its heart.
In the photo is a type of green algae, crescent algae. It is a sample taken by a photographer in a pond. In the photo, it looks like a leaf and is covered with long green stripes.
This is a zebrafish embryo taken by John Gaynes from the University of Utah three days after fertilization. From the photo, it looks like a physically strong, muscular alien.
This is a crustacean placed in Canadian balsam, and in the photo it appears in two colors, pale yellow and orange, quite like a work of art, bright and beautiful.
In the photo is the embryonic fin of a white-spotted bamboo shark, which looks like blue silk floating in the water, transparent and mysterious.
What's in a drop of water in a pond? But who would have thought that there might be another magical world hidden in this!
If we take a drop of water from the pond and zoom in under a microscope, you will find that everything that happens inside is beyond your imagination!
In the water, there are many organisms, bacteria, algae that are so small that they must be placed dozens of times with a microscope to be visible... Numerous. Let's take a look at what the world looks like in a drop of water in a microscope.
Bugs in the water are a bit too "disgusting", so let's start with beautiful algae.
The green striped algae below are "sponges", multicellular algae. Sponges are common in relatively clean oxidized water bodies, and they look particularly beautiful in their bodies, with spiral-shaped chloroplasts:
If we zoom in, the chloroplasts in the sponge body photosynthesize when there is sunlight.
The two ends are pointed, and the curved in the middle is "diatoms", a kind of planktonic algae. The norm for diatoms is to be stationary:
After looking at two common algae species, let's look at some of the insects that move more slowly, this one with slender antennae is the "moss moss", they currently live in nearly 4,000 species, they are fixed group animals, look like moss, but are actually animals.
They always live with seaweed. From the microscope, their antennae are really beautiful, and the rhythm of movement is regular. In addition to living in the sea, it is also often attached to coastal reefs.
This little one is called a ciliate and is a protozoan. The way it moves is quite magical, using the cilia as a motor, and through the regular oscillation of the cilia, they can move forward.
Ciliates now have about 8,000 extant species, and there are other ciliates that look like this, and they are about 0.1 mm long:
The creatures that appear below are the frightening "amoeba amoebas", which are also single-celled protozoa, living in clear water ponds or shallow water with more algae. The terrible thing about amoeba is that it is also a parasite that can enter the brain and cause death, so it is also called a brain-eating worm.
This one, which protrudes in front of it, has a slender flagella called "Peranema", which often squirms at the bottom of the pond.
When swimming, it shakes its flagella to detect its surroundings.
If you want to talk about the ubiquitous creatures in the water, it must be "bacteria". They belong to the "elder class" organisms, appear filamentous under the microscope, and are about 0.2-0.6 mm long:
Let's take a look at the usual activities of bacteria from another angle:
Well, after seeing the lighter taste of the creatures, the water is indispensable to a variety of abnormally active bugs, the following high-energy warning, especially the insect fear patients are prepared.
The following one is the "water fleas", also called "fish worms", which are plankton in the water.
Water fleas are particularly small , generally between 0.2 mm and 5 mm in length , and are active in ponds , lakes or swamps. Jump up very lively:
The oval yellow mite below is a "water mite", which generally lives in fresh water, swimming or jumping around in the water, and the appearance is still particularly cute.
When they swim, they occasionally fall on the moss, disturb it, make a small pit in the house, and then jump away and run.
This one, which looks a bit like a water mite, is a "mesomorph", also known as a mesomorph or seed shrimp. It is a generic term that contains nearly 70,000 species. Usually it will move one by one:
The next person who is stretching his tentacles is the "hydra", a multicellular invertebrate with 5-12 tentacles on its body.
The hydra tentacle can be extended several times over, covered with thorn cells, and each time the tentacle is extended to perceive the surrounding environment, hunt, and hunt quickly and fiercely:
Next to the hydra, the person staring at you in the lower right corner of the picture is the "Ephemera Worm". Ephemerals are familiar to most people, they are promorphosed aquatic insects. The baby worm, on the other hand, is a state when it has not yet grown up.
Ephemeral insects swim in the tentacles, and there are water fleas jumping around to grab the mirror, and everyone looks like a harmonious scene.
Even heavier, the one with the big black round eyes is the "Mosquito Larvae," which has a formal, much more literary-looking name: jié jué.
It is a stage in which mosquitoes grow from their eggs to the middle of a pupal. The body is slender, slightly transparent, and it is flexed and extended when moved.
This red-colored bug that wanders near the algae is the "mosquito larvae", which twists fast, which is already half the speed of the movement. In fact, don't look at its appearance is slightly uncomfortable for insect-fear patients, but it is an important food, and it also has a purifying effect on water bodies.
I never thought that the places that are difficult to see with the naked eye are far more wonderful than we thought. As a netizen said: Think of it this way, the earth is just a drop of water in the cosmic sea.
(The pictures in this article are all from the Internet, only for learning and communication)