Miniscule blue thing from New Zealand

This was one of a few tiny blue creatures clinging to the side of our boat as we came up from a dive in Hahei, New Zealand.

It wouldn't surprise me if this was a rather common creature and possibly well known, but I wouldn't have a clue where to begin looking for proper identification as I cannot even fathom a guess as to the correct taxonomic classification.

At most 3mm long, this was the best photo I could manage I'm afraid, but I'm hoping it contains enough detail to make out what it is. I've also attached the other photo I got, but that was at f/32 and rather fuzzy as a result.

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Thanks for all the help everyone!

Looks like an egg, thats just hatched, moving from larvae to juvenile? I'm no expert, however it reminds me of a mahi-mahi....

Looks like an egg, thats just hatched, moving from larvae to juvenile? I'm no expert, however it reminds me of a mahi-mahi....

According to this link a larval/juvenile mahi-mahi looks like this, and is as such also quite a bit larger.

This was truly smaller than the width of a fingernail, and the eye looks like a bead, not really fully formed like in it seems to show in juvenile fish.