Ornate flying snake (Chrysopelea)

Chrysopelea, or more commonly known as the flying snake, is a genus that belongs to the family Colubridae. Flying snakes are mildly venomousthough they are considered harmless because their toxicity is not dangerous to humans. Their range is in Southeast Asia, southernmost China, India, and Sri Lanka.
It glides by using its ridge scales along its belly, pushing against rough bark surface of tree trunks, allowing it to move vertically up a tree.
Once it decides on a destination, it propels itself by thrusting its body up and away from the tree, sucking in its stomach, flaring out its ribs to turn its body in a "pseudo concave wing" all the while making a continual serpentine motion of lateral undulation, parallel to the ground to stabilise its direction in midair in order to land safely. Their ability to glide has been an object of interest for physicists and the United States Department of Defense in recent years, and studies continue to be made on what other, more subtle, factors contribute to their flight.
 According to recent research conducted by the University of Chicago, scientists discovered a correlation between size and gliding ability, in which smaller flying snakes were able to glide longer distances horizontally. Flying snakes are diurnal, which means they hunt during the day, preying upon lizards, frogs, birds and bats.

 There are three species of flying snake
1.Ornate flying snake-This is the largest species of flying snake, reaching up to four feet in length.
2.Paradise tree snake-This flying snake species reaches up to three feet in length and is popular in the European pet trade.
3.Twin-barred tree snake or banded flying snake-This is the smallest flying snake species, reaching up to two feet in length.

Yellow lipped sea krait

Body subcylindrical, only slightly compressed. Rostral higher than broad; an azygous shield separating the prefrontals, sometimes absent; frontal considerably longer than its distance from the end of the snout; 1 pre- and 2 post oculars ; 7-8 supralabials, the 3rd-4th touching the eye temporals 1+2 ; five infralabials in contact with the genials, both pairs of which are usually well developed and in contact with one another, the anterior pair smaller than the posterior ; a double series of elongated scales, the inner series the larger, at the oral margin. Scales in 21-23 rows (rarely 25). Ventrals 213 to 245, about four times as long as broad. Caudals in males 37-47, females 29-35 (Smith 1943:443).
Total length: males 875 mm, females 1420 mm; tail length: males 130 mm, females 145 mm. In colour these snakes are light or dark bluish grey above, yellowish below, with black bands more or less of uniform width throughout or narrowing on the belly (some of them interrupted below). Upper lip yellow. Snout yellow, the colour extending backward on each side of the head on each side of the head above the eye as far as the temporal shields, leaving a dark bar in between. Rest of the head is black.

They are venomous but are not aggressive to divers.


Banded sea kraits are often seen in large numbers in the company of hunting parties of Giant trevally (Caranx ignobilis) and Goatfish. These snakes need to drink freshwater and regularly come onto land.

Observation and nesting

Banded sea kraits rest and nest on rocky headlands and beaches of Sabah, Borneo. They can be seen in the wild at Pulau Tiga, the tip of Borneo and Mabul island. They are, however, seen on a many other rocky headlands around Sabah that are harder to access. Occasionally they come ashore at Tanjung aru close to Kota Kinabalu. They can be seen in captivity at The Green Connection, an aquarium in Kota KInabalu. The males come ashore early in the evening and wait at the high tide line for the females. Females are much larger and many males will escort and intertwine around a single female. They are also seen on Kadavu Island in Fiji and can often be found in the shallows whilst snorkelling. A specimen identified as a banded sea krait was seen on a small island off Padre Burgos, Luzon, Philippines, in November 2010. Locals familiar with the island say the snakes are most frequently found in crevices in the rock by day and roaming the beach and nearby waters after dark. This kind of snake has been seen also in beach in island of Boracay, Philippines.

Parasites

Banded sea kraits when collected near the tip of Borneo had heavy tick infections (Clark M & S Oakley,2011)

Boomslang Snake

The average adult boomslang is 100-160 cm (3¼-5¼ feet) in total length, but some exceed 183 cm (6 feet). The eyes are exceptionally large, and the head has a characteristic egg-like shape. Coloration is very variable. Males are light green with black or blue scale edges, but adult females may be brown.
The head is distinct from the neck. The canthus rostralis is distinct. The pupil of the very large eye is round. The maxillary teeth are small anteriorly, 7 or 8, followed by three very large grooved fangs situated below the eye. The mandibular teeth are subequal. The body is slightly compressed. The dorsal scales are very narrow, oblique, strongly keeled, with apical pits, arranged in 19 or 21 rows. The tail is long, and the subcaudals are paired. Ventrals are 164-201; the anal plate is divided; and the subcaudals are 91-131.

Behavior and diet
Boomslangs are diurnal and largely arboreal. Their diet includes chameleons and other arboreal lizards, frogs, and occasionally small mammals, birds, and eggs from nesting birds, all of which they swallow whole. During cool weather, they will hibernate for moderate periods, often curling up inside the enclosed nests of birds such as weavers.
Venom
Many venomous members of the family Colubridae are harmless to humans because of small venom glands, weak venom, or inefficient fangs. However, the boomslang is a notable exception in that it has a highly potent venom, which it delivers through large fangs that are located in the back of the jaw. Boomslangs open their jaws 90 degrees when biting. The venom of the boomslang is primarily a hemotoxin; it disables the blood clotting process and the victim may well die as a result of internal and external bleeding. Other signs and symptoms include headache, nausea, sleepiness and mental disorders.
Because the venom is slow to act, symptoms may not be manifest until many hours after the bite. On one hand, this provides time for procuring the antivenom, while on the other it may lead victims to underestimate the seriousness of the bite. Snakes of any species may sometimes fail to inject venom when they bite, so after a few hours without any noticeable effects, victims of boomslang bites may believe (wrongly) their injury is not serious.
An adult boomslang has 1.6–8 mg of venom.[8] Various sources give figures ranging from 0.06 - 0.72 mg/kg being sufficient to kill mice in 50% of cases, if the venom reaches a vein (LD50).
In 1957, well-known herpetologist Karl Schmidt died after being bitten by a boomslang. D.S. Chapman states that between 1919 and 1962 there were eight serious human envenomations by boomslangs, two of which were fatal. The South African Vaccine Producers (formerly South African Institute of Medical Research) manufactures a monovalent antivenin for use in boomslang envenomations.
The boomslang is a timid snake, and bites generally occur only when people attempt to handle, catch or kill the animal. The above data suggest boomslangs are unlikely to be a significant source of human fatalities throughout their distribution range.

Black Mamba

The Black Mamba snake also known as Dendroaspis polylepis is one of Africa’s most dangerous and feared snakes. The black mamba is the largest venomous snake in Africa and the second largest snake in the world, after the King Cobra. Adult black mambas have an average length of 2.5 meters or 8.2 feet and a maximum length of 4.5 meters or around 14 feet. The Back Mamba is also one of the fastest land snakes in the world. It has the capability to reach speeds in excess of 12 mph or 20km/hr. It mainly uses this speed the escape danger rather than capturing prey.
The Black Mamba gets its name not because the color of its body, but because it has a black inky color mouth. The black mamba has either a dark olive, olive green, grey brown or metal color skin depending on what area on the country the Black Mamba is found. As Black Mamba’s begin to age, their skin starts to become darker.
Black Mambas are elapid snakes, which mean they are venomous snakes found in tropical or subtropical regions around the word including the Indian and Pacific Ocean. Elapid snakes are characterized by having a set of hollow, fixed fangs through which they inject venom. Black Mambas venom contains powerful, fast-acting neurotoxins and cardiotoxins, including calciseptine. Calcoseptine contains 60 amino acids with four disulfide bonds and is one of the main culprits for the Black Mambas prey to stop pumping blood through its veins.

Each bite that the Black Mamba delivers has about 100-120 mg of venom on average and it can deliver up to 400 mg. If the venom reaches a vein, .25 mg/kg is enough to kill a full-size human in half of the cases. The initial symptom of the bite is local pain in the bite area, then the viction experiences a tingling sensation in the mouth and extremities, double vision, tunnel vision, severe confusion, fever, excessive perspiration, foaming of the mouth and nose, and a lack of muscle control.
If the victim does not receive medical attention, symptoms rapidly progress to severe abdominal pain, nausea and vomiting, shortness of breath), and paralysis. Eventually, the victim experiences convulsions, respiratory arrest, coma, and then death. Without antivenom, the mortality rate is nearly 100%, the highest among venomous snakes.