1. Saltwater crocodile
By: Megan Rard
Marine Science “B”

2. Range Map

3. Taxonomy
• Class: Reptilia
• Order: Crocodylia
• Family: Crocodylidae
• Genus: Crocodylus
• Species: Crocodylus Porosus

4. 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

6. 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)

9. 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

10. 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)

12. 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

13. 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…

14. What kind of foods they like to eat?
Fresh/saltwater fish
many of amphibians crustaceans
molluscs
large gastropods
large cephalopods

15. 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!

16. 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

17. 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

21. THE END!