Photoshop gurus - help with filters/colours.

[Pete.]

I have a bunch of photos I took whilst snorkelling, but being a n00b at both snorkelling and taking photos most have come out quite green in colour (not helped by my having to use a Samsung Pixon phone to take them instead of my digital camera coz I couldn't find a waterproof pouch to fit my camera). Some of the brighter coloured ones I've managed to bring up quite well in photoshop 8 but the ones which are taken from more than a few feet suffer badly from loss of colour. I need some advice on how to bring them up the best I can. I'll stick a couple of examples here so you can see what I'm up against.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Wafer_Thin_Ham]

sounds like you may need to change the white balance. Not sure how to do it on jpgs, but I'm sure there's a plug in for it.
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My Flickr

[Pete.]

Here is one that I'd really like to improve. I have some which are much better and I know I can't increase the detail here but if I can improve the colours it would be a start:
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Pete.]

[Stevie B]

I'm just about to head out but had a quick play for a minute. Looks a bit better but certainly not as good as it could look if you had say 15 mins to spend on it.
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Past: Katana 50, NSR125RR, FZR600r, CB-1 Present: TRX850

[ms51ves3]

My best effort after messing with the contrast and brightness.

https://i15.photobucket.com/albums/a376/ms51ves3/PHOTO0263.jpg

[Pete.]

Hey that's not bad. I've been experimenting and found that I can get good results using 'selective colour', choosing neutrals and taking out colour from that. It doesn't mess with the original colours so much.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[SlimRick]

Here's my effort:

https://farm5.static.flickr.com/4032/4391521883_5d4b146d8a_o.jpg

[Drew]

My effort, which looks pretty much like ms51ves3's.

Mine using levels and curves.

[Pete.]

This one is causing me a bit of trouble. Looks like there are some good colours to be brought out but I just don't seem to be able to get them. This one was taken on a waterproof disposable camera:
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[SlimRick]

https://farm3.static.flickr.com/2747/4393068918_bb98a4d735_b.jpg

[ms51ves3]

I think Slim's pictures win.

[Pete.]

Pretty good job but just like my efforts, the parrotfish look like they are wearing rupaul's makeup
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Phoenix]

attempt

https://www.bikechatforums.com/files/fishies.jpg

[Pete.]

I like that - a little less harsh on the coral-reflected sunlight
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Flip]

https://i2.photobucket.com/albums/y37/flip_/CNV00013.jpg

https://i2.photobucket.com/albums/y37/flip_/CNV00013resharp.jpg

[Pete.]

Nice one Flip - I used your top image and applied 'despeckle', added a slight 'underwater' filter and came up with this:
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Flip]

It's rare that I'm helpful on here, it's made me feel all warm and fuzzy. I think that's what caused it anyway.