When can I discover the epic items in archaeology?
We don't really know right now, but it's safe to assume that you're going to have to max out your archaeology skill level in order to find them. Archaeology, in my opinion, has a way to go in its development still. The rewards need to be something more than vendor trash, initially. While obviously they don't have to be (and shouldn't be) big, amazing things, they can still be more than the gray items that we get now.
We'll see, though; I reserve my final judgment for when I max out the skill.
Some time next year.
If I purchased the regular edition of Cataclysm and used the key for my account to start playing, then later on came across a copy of the Collector's Edition, will I be able to use the key from the Collector's Edition to get the pet?
Yes, you can get the pet by putting in the Collector's Edition key, even if you have the normal edition.
How long did Blizz expect it to take players to reach 85? Considering some of my guild and a good lot of players on my server hit 85 within the first day of release, I'm a bit worried that this expansion will start to lose momentum fast.
Blizzard expected it to be hit pretty fast, especially compared to previous expansions. It wasn't exactly a secret that in the beta leveling went fast, and certainly now that everyone is able to go through the content, it's widely known. I blasted through to 84 after about 12 hours, then stopped for the day and did 85 the next. Wasn't really a grind at all.
Part of the ease with leveling is how well done all the quests and zones are. There are very few poorly designed quests, and that helps people keep leveling very quickly.
I wouldn't worry about this expansion losing momentum. There's a lot out there to do. The masses are not going to be geared up for a good while, and by then it'll be time for raids. The cycle will continue as it has done with other expansions, but this time heroics are going to be honest-to-god hard, and people will not be ramming through them right away. That is going to slow end game progression, for most people, way way down.
Many people asked:
What's the genus of the sea horse?
The genus of the sea horse is the Hippocampus. According to the best source of knowledge ever, Wikipedia, there are over
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