Saltwater crocodile

By: Megan RardMarine Science “B”

Range Map

Taxonomy• Class: Reptilia

• Order: Crocodylia

• Family: Crocodylidae

• Genus: Crocodylus

• Species: Crocodylus

Porosus

Size of saltwater crocodile

• Baby crocodile measure about 25-30 cm (9.8-12in) long and weigh an average of 70 g (2.5oz)

• Youth crocodile will grow to 1 m (3.3ft) long and weigh 2.5 kg (5.5lb)

• Males’ sexual maturity grow about 3.3 m (11ft) in 16 years of age

• Females’ sexual maturity grow about 2.1 m (6.9ft) in between 12-14 years of age

Size of saltwater crocodile

• To become an adult, a male saltwater crocodile is normally 4.3 to 5.2 m (14-17ft) long weighing 400-1,000 kg (880-2,200lb)

• A large and mature males can grow up to 6 m (20ft) in length and weight more than 1,000 kg (2,200lb)– The largest male was 7.1 m (23ft) but

now it becomes rare to find– The largest female was 4.2 m (14ft)

Reproduction• Saltwater crocodile mate in the

wet season– That’s when the water levels

become really high– In between September and October,

the male and female start mating– In between November and March,

the female start lays eggs

Reproduction• The female must choose the

nesting site so the parents can protect the nesting

• The nest is covering of mud and vegetation– Usually measuring 175 cm (69in)

long and 53 cm (21in) high– About 40 to 60 eggs but sometime

it can happen to have 90 eggs!– The egg size is about average 8 by

5 cm (3.1 by 2.0in) and weigh 113 g (4.0oz)

Reproduction• Female crocodile protects the

nest for 80 to 98 days• BUT… when the water become

really high due to flooding and it can happening to predation

• As in all crocodilians, sex of the hatchling is determined by temperature–With low temperatures producing

females–With high temperatures producing

males

Food preferences• The saltwater crocodile is a top level of

predator that can take any animals that enters its territory, either in the water or on land

• They are not picky eaters but are not voracious eaters as they are able to survive on relatively little food for a long period of time

• May take animals of almost any variety as its becomes available to them and due to the big power, aggression and size of the species

• Hatchlings are restricted to feeding on smaller animals such as small fish, frogs, bugs and etc…

What kind of foods they like to eat?

Fresh/saltwater fish

many of amphibians

crustaceans

molluscs

large gastropods

large cephalopods

What kind of foods they like to eat?

birds

greater mouse deer

hog deer

porcupine

fishing cat

Too many list for animals including reptiles and sea-animals in the ocean!

Habitat• Saltwater crocodiles normally spend the tropical wet season in freshwater swamps and rivers, moving downstream to brackish water in the dry season and sometime traveling far out to sea

Behavior• Saltwater crocodiles have a strong type of behavior to treat humans in their territory as prey, and have a long history of attacking humans who cross into their territory• Given their power, size, and speed, survival of a direct predatory attack is unlikely if the crocodile is able to make contact

THE END!