Ratchet and clank future 2

Ratchet and Clank: Future 2 has been confirmed by isomonic games as their 2nd installment in the Future series and has a due date of about 2009 to early 2010 this game is going to continue on at the last point where Ratchet has to now go track find out where Clank is then rescue him.

A problem that they never figured out yet is without Clank how is Ratchet ever going to Glide or swim?