Hard to tell for certain, but it looks like young Swiss chard.

I have some choi sum growing that looks similar.

Thanks Bish for your comment. Someone else on another site said I might have bok choy, the shanghai green variety. I'm quite happy with that :)

Do update us in due course as i am curious! lol

http://www.bountifulgardens.org/Chard-Erbette/productinfo/VCH-3120/

I came across this...

zeedman zone 5 wisconsin on this site did post a comment earlier to say it looks like young swiss chard. It does look like my seedlings may be a variety of chard, after seeing the photo on the link you sent. Thank you for the link! I'll see how the seedlings progress. The ones you see in the photo above are gone sadly, no thanks to pests. Some more new ones are just starting to grow.

Hard to tell for sure, are they pretty young still? They look like when my sensopai started, but the leaves got wider after more leaves developed. Although, the thinner leaves, and the glossy sheen may mean a type of chard.... I would say if small round leaves develop under the broad leaves, and the broad leaves get bigger and round its sensopai, if the stems stay bare under the broad leaf and the leaves stay more elongated its a type of chard....

OMG, that is horrible to hear. :( Now i remember why i grow in containers. I'm not sure i want to feed the slugs by growing in the garden bed now although container space is extremely limited.

Thank you Joe B. I will monitor the new crop and see how the seedlings take shape. Cheers.

Kkwan28, do you still have unplanted seed? The seeds of chard look much different than those of brassicas, so if you can describe the seed or post a photo, we could at least narrow down the possibilities.

Good point! Chard seed isn't smooth and round, it's all crumpled and looks like a.... tiny asteroid?