you'll see something interesting. Sponges and true jellyfish compose a single taxon. Now that is something that surprises me (perhaps for no greater reason than I don't know much about the early branchings of the animal tree).
Hmm... if I understand the way this tree was constructed correctly, that's not a necessary interpretation, what it actually shows is that the Bilatera are most closely related to each other than they are to either sponges and true jellyfish, and that sponges and true jellyfish are more closely related to Bilatera that they are to Ctenophora.
This is not particularly surprising as Bilatera has long been recognised as a grouping (a subregnum, in some classifications).