Re: In human cloning, can sea mammels eggs be used as a host for human DNA.

The short answer is no.  There is an intricate connection between the 
cytoplasm and nucleus in early development and most likely the cytoplasm 
in the dolphins would not support a nucleus from a divergent species such 
as human.  Specifically the dolphin mitochondrial might not be able to 
make use of nuclear encoded mitochondrial proteins.  However, Hollywood 
seems to overlook these types of issues.