Had a look over this. I love me some new race options. Without much background, I was trying to 'place' ash elves, then I realised they are version of Dark Sun elves. I have done these myself, but I liked how the article handled their ability to endure at physical tasks (such as running). Intense focus is a good feature.
It would have been good to hear what distinguishes ocean elves from other aquatic elves, but the features make it obvious: not as good at swimming (strangely) but good at social interactions. (Has me thinking they are like half-aquatic-elves).
The two lots of variant elf abilities I think would work better as racial feats. (Given they are optional I see why you may go this way, but these are optional too). Anyway, along with an ability increase I would allow these to be taken as racial feats.
Items are reflective of elven culture. Nice items (though odd to link an item's feature to long rests - maybe just until the next dawn like other items).
Some good ideas in here - I just would have incorporated them differently.
