1, long-necked turtles Long-necked turtles are the oldest existing reptile, is a side-necked turtle, the head can not be retracted into the shell, only to the sides of the bend.

Carnivorous, feeding on worms, snails, shrimp and small fish, but also eating plant stems and leaves. Belongs to the order of turtles - snake-necked turtles - a long-necked turtle genus.

Also known as snake-necked turtles. Distributed in eastern Australia.

The body is small, generally 15-25 centimeters long. 2, musk turtles Musk turtles (scientific name: Kinosternon odoratum), omnivorous animals, inhabiting large springs and streams, streams, rivers, oxbow lakes, swamps, and ponds formed by tuff pits.

Primarily found in central Georgia, to central Florida, westward to eastern Mississippi and the easternmost part of Louisiana, and northward through all of eastern Tennessee. Musk turtles are ink-black and rough when they are small, and their shells turn rounded and smooth as adults, and their color fades to brown to black, with two white lines extending from the muzzle to the neck, making it easy to tell that they are one of the smallest zephyr turtles in the United States.

3, pig-nosed turtle pig-nosed turtle, English name Pitted-Shelled Turtle, New Guinea Plateless River Turtle, scientific name Carettochelys Insculpta. common name: two-clawed turtle, turtle, flying river turtle.

Also known as the Oceania Pig-nosed Turtle [1], it is the only species of the genus Carettochelys in the family Carettochelysidae. Its distribution is restricted to northern Australia, southern Irian Jaya, and southern New Guinea, and it is the only remaining species in the family Amphibiaceae.

In 2004, for the first time on the World Wide Fund for Nature announced the top ten endangered species of the top ten. 4, yellow-bellied slippery turtle Yellow-bellied slippery turtle (English name: Trachemys scripta scripta) is distributed in the southeastern part of Virginia to the north of Florida, westward to New Mexico, a kind of turtle, commonly known as the yellow-eared turtle.

5, Florida Painted Turtle The Florida Painted Turtle (Cooter, Chrysemys floridana) is 7 1/2-15 7/8" (19.1-40.3 cm) long. Vertical stripes grow on the second rib shield and often form open forks at one or both ends.

The dorsal armor is slightly brownish and long with a yellow pattern; the upper surface of the marginal shield has a short central stripe, while on its lower surface a circular pattern grows. Ventral armor yellow, without pattern.

Males have elongated claws on the forelegs. .

Are there any freshwater species of deepwater turtles

Freshwater species of deepwater turtles include the pig-nosed turtle.

The Pig-nosed Turtle (scientific name: Carettochelys insculpta), also known as the Oceania Pig-nosed Turtle, alias the Flying River Turtle, is the only species of two-clawed turtle in the family Amphibiaceae. Its distribution is limited to northern Australia, southern Irian Jaya, and southern New Guinea, and it is the only remaining species in the family Amphibiaceae.

The Pig-nosed Turtle is a highly aquatic freshwater turtle that lives in the water all year round, except for laying eggs, so its limbs are specialized into flippers like those of sea turtles, which is unique among freshwater turtles. The length of adult pig-nosed turtle's dorsal carapace is generally up to 46-51cm, and its weight is generally 18-22Kg. The largest pig-nosed turtle found so far has a dorsal carapace length of 56.3cm, and its weight reaches 22.5 Kg. Its dorsal carapace is rounded, and it is dark gray, olive-gray, or brownish-gray, with rows of white spots near the edges. The edges are slightly serrated, and there is no skirt like in the turtle because the outer edge of the skeleton is well developed and structurally complete. There is also no shield, but instead the skin is continuous and slightly wrinkled. The dorsal armor has a row of spiny crests in the middle. The body plastron is pale, white, creamy white, or yellowish, and slightly cross-shaped. The head is medium-sized and cannot be retracted into the shell. The pig-nosed turtle is one of the most peculiar-looking freshwater turtles, with a long, fleshy snout that resembles a pig's snout, hence the name "pig-nosed turtle". There is a gray stripe behind the eyes. The limbs are flippers in order to adapt to aquatic life, and cannot be retracted into the shell. Two distinct claw nails near the midpoint of each forelimb are one of its characteristics.

There are no freshwater species of deep-water turtles

Freshwater species of deep-water turtles include the pig-nosed turtle.

The Pig-nosed Turtle (scientific name: Carettochelys insculpta), also known as the Oceania Pig-nosed Turtle, alias the Flying River Turtle, is the only species of two-clawed turtle in the family Amphibiaceae. Its distribution is limited to northern Australia, southern Irian Jaya, and southern New Guinea, and it is the only remaining species in the family Amphibiaceae.

The Pig-nosed Turtle is a highly aquatic freshwater turtle that lives in the water all year round, except for laying eggs, so its limbs are specialized into flippers like those of sea turtles, which is unique among freshwater turtles. The length of the dorsal carapace of adult pig-nosed turtles is generally up to 46-51cm, and their weight is generally 18-22Kg. The largest pig-nosed turtle found so far has a dorsal carapace length of 56.3cm and a weight of 22.5 Kg.

Its dorsal carapace is rounded and dark gray, olive or brownish-gray, with rows of white spots near the edges. The edges are slightly serrated, and there is no skirt like in the turtle because the outer edge of the skeleton is well developed and structurally complete.

Neither is there a shield, but instead a continuous and slightly wrinkled skin. The dorsal armor has a row of spiny crests in the middle.

The ventral carapace of the body is pale, white, creamy white, or yellowish, and slightly cross-shaped. The head is of moderate size and cannot be retracted into the shell.

The pig-nosed turtle is one of the most peculiar-looking freshwater turtles, with a long, fleshy snout that resembles a pig's snout, hence the name "pig-nosed turtle". There is a gray stripe behind the eyes.

The limbs are specialized into flippers to adapt to aquatic life, and cannot be retracted into the shell. Two distinct claw nails near the midpoint of each forelimb are also characteristic.