so far, only very closely related species are able to produce hybrid, so at least you should be using primates, definitely not dolphin nor alligator. Simply putting sperm of other species in a womans vagina wouldnt have any result, if it was that easy, hybrids would be everywhere already.
thus if you want to produce something that have to characteristic of two different species, genetic engineering is more likely, like inserting the genes of a dolphin into a human zygote or vice versa. but again the ethical issue comes in.

if you are paying people to do this, be prepared to spend at least a million per year, do you have? even if you have i would be spending the money on something more productive.
you also need some good reason to convince qualified professionals to do this, but it looks like that you dont have a good idea on this issue.

If you think dolphins are even remotely closed to being human relatives you are sadly misinformed.

13 of the 22 dolphin chromosomes are identical to human chromosomes.

Just saying.

You see I knew it all along. The dolphin would be the first successful hybrid HumInal.

I have a link about this, except I'm fairly certain it would not be well received. Regardless, it originates from the scary parts of the internet. You can use google to probably find what I'm referencing fairly easily. :ph34r:

except its still not close enough. like someone else said, would probably be better to just genetically alter.

Nice
Incase anyone was wondering Kaus has a video of a man having sex with a dolphin and putting his sperm inside of it
This is exactly what I wanted to see and he showed me it

Now I wonder what the babies looked like.

I hope it isn't possible. Theres probably a 0.000000000000001% change it is tho. Just look at horses, donkeys, and mules.

Look up prezygotic barriers for more info, its probably what you're looking for

This post was edited by EndlessSky on Mar 21 2012 07:06pm

Even if there was a successful fertilization event the postzygotic barriers would kill the organism before it matured enough to survive.

omg there not!!!??