Yes very addictive .I have just got a new camera and am still sorting out the settings .from what I have learnt good lighting or lights,are the key to getting a good vid or pic .most of my stuff is 20-40m deep and everything looks greeny blue.am slowly getting a handle on things so will be posting some pics very soon .

 not a bad lot of pics. what sort of program are you running to clear p the pics. 

its a whole new world down there and it is easy to loose track of time when your busy snapping away with the camera. 

 have a look at the program called picasa , it is an easy to use beginners program for cleaning up your pics and getting different affects, best of all it is free to download

Love it - you have a great set of shots there.

A couple of comments to help mate - take them as you will or just ignore...

I assume you have a flash?  The first photo (of juvenile Miller's Damselfish) has great lighting and I assume the flash fired.  Most of the rest look as though they are just natural light.  It can be very hard when you are in shallow water like you are, especially when it's very sunny (like Karratha) because the camera's auto settings will not fire the flash.  Spend some time getting to know your camera setting and try to use manual flash settings from time to time.  It will take some experimenting until you find when its best to use it though.  For example, you wouldn't want flash for the Blackspot Dart photo with all the white sand in the background, but all the shadows could be improved in say the last 3 shots.  Again the starfish looks cool with the shadows, but you could change the photo with a flash - personal choice and depends whether you want arty-farty shots too :-)

It looks so shallow that I'm also guessing you are on snorkel.  Try to dive down and breath-hold as you approach from side on - For example photo 4 (Bridled Monocle Bream) and photo 5 (Threespot Wrasse) are taken from slightly above.  You will end up with hundreds of these if you aren't careful, so try to get down to their level more.  Some, like the dart are very hard to appraoch, so all you can hope for is an angled shot.

Finally, depends what you want from your photos, but you fall into the trap of most starters (and fishermen) of concentrating on the fish.  Think about the background too.  It is quite patchy and rubbly there and some of the backgrounds are just plain ugly.  Again, doesn't really matter if you just want the fish, but the pics will be much nicer on the eye if the background is interesting, or at least alive....

keep it up mate, oh and, if you don't already, make sure you figure out the names of the critters in your photos.  Makes it much more fun and can save the photo with a name.  You can accummulate digi photos very quickly and have a good system to know what you have and when/when you took it is a good habit to get into from the start.

Some nice pics of some nice fish.

A few general photog tips for anyone looking at doing more photography (not all specifically directed at you Brynner)

As the Faulkners suggested, see if you can get a program like Picasa or photoshop/lightroom (pretty sure you can get a 30 day trial for lightroom?). With the program, you can up the contrast and tone down the blues and greens for a more natural clearer look. Anything but the most crystal clear water will cause colours to wash out and appear milky/muted. You can also use better resizing algorithms and choose a higher output quality JPEG compression.

If possible, always try to fill the frame, rather than cropping later. Avoid digital zoom at all times (you can do it better on the computer). Usually it makes sense to not zoom in if you can help it too (for various reasons).

If you can, keep ISO low (but you'll need a lot of light and correct aperture to make sure you dont get blurry pics due to low shutter speed). Easiest was is to just look up the pic properties later. Wider apertures, particularily in compact cameras are usually good (if you know how to set it).

Flash, or extra lighting is nearly always useful. Put a diffusor on if you can if its a bit silty though. Not much red after you go a few m under water, so a torch, flash (or best, a strobe) can really help. You can correct a little in post processing, but best to get as best as you can out of the camera.

In terms of the pics themselves:

Composition: Centre of frame can work well for some pics, but gets a bit repetitive after a while (depends whether you're going for artistic or technical shots though). The "two thirds" rule can work well (but its a guide, not really a strict rule). Try to put different stuff in the pic and figure out where you want the eye to be drawn. Something needs to capture your eye.

Think of different angles. Particularily in underwater shots, its easy to point and shoot and not set up the shot. E.g. top down a fish can just blend into the reef. Looking up can look pretty interesting, particularily for reef dwellers. E.g. a fish perched on the reef would look boring from the top, but if you got behind it, you could get a shot of the fish looking over into the distance waiting for prey. Perhaps half the frame could be blue water.

For fish, it can help to remember to 'lead the frame'. I.e figure out where the fish is heading, and give it more space there. I.e. show where its headed or where its looking at. This works well for animals or people looking in a certain direction, or moving objects.

Not always easy, but if you can, try to set up a 'theme' for a picture. Think what you'd describe it as. What do you want the picture to say. If its just a fish, it can be boring, but if you have a theme, it can be interesting. Looking at other peoples pics can demonstrate this.

A lot of scuba guys can take 10min just to get the shot right.

Also, if the pic looks boring in a thumbnail, it'll look boring large sized. You still need general shapes, colours, contrast to 'construct' the image.

Always worth looking at other peoples pics for inspiration. Particularily pro photographers. You wont always have the gear to get the shot, but it can give inspiration. Looking on dive enthusiast forums gives a good idea of what amateurs can do with reasonably basic equipment which is usually good inspiration.

And of course, practice, practice, practice.

Lots of guides and tips online too: http://www.uwphotographyguide.com/underwater-photography-tips

(This one has HEAPS of tips. Some more basic than others. E.g. see composition: http://www.uwphotographyguide.com/underwater-photography-composition-beginners#BACK)

(wow thats a long post. I didnt even include much technical stuff. Hopefully will be helpful to someone)

I've dropped concrete hints to old fart thats what I'd like for Xmas, as I love to dive (in shallow water) and just look at the coral/rock formations, would love also to take photos of under water, good advice from a few fw'rs also thanks from me too, good hints and tips.  I found photoscope a excellent free download for photos too, also picaso.

Thanks guys there are some really good tips there. I guess the hardest part is setting up the flash or getting out when there is sufficient sunlight, and of course not trying to spook the fish. I do have photoshop but might look into picasa aswell, to see if there is a big difference between the two. I find it to be a good fitness workout as I have been out for a couple of hours at a time snapping hundreds of shots. There would only be a small number of pics that are keepers but that makes you more determined to get that perfect shot. Looking also to get the camera out while spearing to get some continuity with the photo albums.