Abyss Scuba Diving

What Will I See While Learning To Dive In Sydney?


What Will I See While Learning to Dive in Sydney?

Are you interested in learning to scuba dive, and do you want to know what you will see while taking your PADI Open Water courses? Most people are surprised when they learn how many fish and marine creatures can be seen while scuba diving in the waters around Sydney.

Sydney is a great city to train for a scuba diving certification, offering divers the chance to discover some of the most vibrant and intriguing sea life imaginable. A recent study revealed that Sydney's marine wildlife is more diverse than any other harbour, with some six hundred marine animals identified so far.

Over the past 25 years of teaching the PADI Open Water Course, my students have seen many creatures, including blue gropers, weedy sea dragons, Port Jacksons sharks, giant cuttlefish turtles, dolphins, goatfish and much more. Although there is little coral around Sydney, the sponge gardens are very vibrant and fascinate most new divers.

Blue groper while learning to dive in Sydney

Blue Gropers:

Blue gropers are known as the friendliest fish in the sea, capable of growing over a meter in length as well as a weight of 25 kg. It is a favourite with scuba divers because it is like a Labrador dog, swimming up to you and visiting and being very friendly. In Sydney, blue gropers are regular sights for divers, and you are certain to encounter them during your open water course.

Weedy Seadragons:

Weedy Sea Dragons are distinct to Australia and are found in the waters around Sydney. Closely related to the seahorse, the Weedy Sea Dragons are distinctive in their behaviour as much as their magnificent colourful and weedy appearance. If you are doing your learning to scuba dive course at Kurnell or Bare Island, you will have a good chance to scuba dive with them.


Port Jackson Sharks:

The Port Jackson Shark is the most common shark found in the waters around Sydney. It grows to about 1.65 M in length and is considered non-threatening to humans. These sharks are regularly seen by students on PADI courses between June and October. However, many students who take their PADI scuba diver certification during January and February are lucky enough to see baby sharks hatching out of their eggs.


Giant Cuttlefish:

Cuttlefish are quite possibly the most incredible-looking creatures on the planet. Often seen with their bodies pulsating assorted colours, especially during mating season, cuttlefish are amazing to observe. From June to September each year, the species come together to mate and lay eggs, after which most cuttlefish will die. The mantle length of the Giant Cuttlefish can grow up to half a metre, and the species can reach up to one metre in total length when fully grown.

 Turtle with scuba diver in Sydney


Many new divers are surprised to learn that turtles can often be spotted while diving around Sydney. I have had students see a turtle nibbling on kelp at their feet as they entered the water at Bare Island. It should be noted that there are three species of turtles that are seen regularly in Sydney waters: the Green Turtle, the Loggerhead Turtle, and the Leatherback Turtle. Such turtles are frequently spotted on the northern side of Bare Island Reef, out in Sydney waters.



You might spot pods of dolphins on a dive in the waters of Bates Bay at Cronulla and Botany Bay, and on open water courses, you will often be able to see such pod swim by while you are getting ready for a dive. It is uncommon, but dolphins have been known to swim through the middle of a group of students while they are practising skills on several occasions.



Goatfish fascinate new divers more than other fish that they take note of during their open water course. They are fascinated by their vigorous feeding behaviour with barbels and mouth, which leads to the stirring-up of sediments and associated detritus particles high into the water column. Although most experienced divers do not even notice these small fish, they always are raised by students when the dive is being logged.


Sponge Gardens:

Sponges are simple colonial animals. Sponges feed by filtering tiny food particles from the current of water that they create around themselves. There are around 160 species in Sydney. They range in colour from orange to purple to yellow and occasionally black.

Thanks to the varying marine life found in the waters around Sydney; you are in for an underwater adventure as impressive as any on land. Sydney is a beautiful location to learn to dive.

What scuba dives in Sydneys underwater world