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Salt water or estuarine crocodiles (Crocodylus porosus.) |
There are 2 species of crocodile in Australia, the freshwater (more properly
known as the Johnstone River Crocodile) and saltwater or estuarine croc. Only
the saltwater crocodile is a man-eater, but don’t let the name fool you. It is
also found in freshwater rivers and billabongs many miles from the sea. It’s
range now extends from Onslow in the west
(one was even found as far south as Shark Bay and we note in
the latest literature even Exmouth is now included in
'saltie' territory.) to Gladstone in the east. Saltwater
crocodiles are extremely dangerous, you MUST always take precautions while in
areas that they inhabit.
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Always take note of posted warning signs. If you are fishing stay well back from the bank and do not clean fish within 50 metres of the river. Do not camp next to a river. There are cases of crocs attacking people in tents.
If you are fishing the same river over a period of days do not return to the
same spot each day.
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What do you do if you are unlucky enough to be threatened by a crocodile in the
wild? If you find yourself face to face with a croc don't count on it being
afraid of people. They have been protected since 1972 (1970
in W.A.) and the large crocs have
no fear of mankind. They do have a natural caution like most predators and there
is a possibility of bluffing them by throwing things at them and making a lot of
noise.
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Freshwater or Johnstone River crocodile (Crocodylus johnstoni.) |
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Crocodiles prefer to take people when they are on their own in the water, they seem to be more cautious about attacking people swimming close together. This is no guarantee of safety as attacks have come amid a group of people in only 45cm of water. In another case where a couple had to swim from shore to their boat, the croc waited until one climbed aboard before making its move.
Being in a small boat carries a fair degree of risk as well. Val Plumwood was
attacked by a large croc while paddling a canoe and there was the infamous
'Sweetheart' who attacked and sometimes sank aluminium dinghies but strangely
left their occupants alone.
One survivor of a croc attack who was diving at the time,
managed to get his fist down the crocodile's throat. Crocodiles have a muscular
flap of skin at the back of the throat that stops water entering while their
mouths are open. In this instance it appears that once the victim got his fist
past this flap of skin the croc started to take in water and would have drowned
if it had not released his grip.
Even camping near the water can be dangerous as a recent attack on a group in Queensland demonstrates. The campers had been at the same spot for 12 nights and the croc watched their routine. It knew when to attack and chose a time late at night when everyone was asleep. Two people were badly injured during the attack and the croc was finally shot. The recommended distance from the water for campers is 50 metres but we would more than double that in croc country.
The salt water crocodile is the largest of all crocodile species and its bite has been measured at over 2000 lbs per square inch making it the most devastating bite in the world. Crocodiles, unlike all other reptiles, have a 4 chambered heart and can partially regulate their body temperature despite being officially labeled as cold blooded. Crocodiles are survivors from the age of dinosaurs and are actually more closely related to birds than they are to other reptiles.
Although the freshwater species is not regarded as a threat to human life they can grow to be quite large (2-3 metres in length) and on occasion they have been known to attack people in what is believed to be territorial defence. They may not be as dangerous as the salty but must also be treated with a great deal of respect and caution. Freshwater crocs have been protected in W.A. since 1962.
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Freshy Salty