Manti Messenger | 1944-08-18 | Page 2 | Jet Propulsion Isn't New; Fish Have Long Used It

I Jet Propulsion Isn't New Fish Have Long Used It Jet propulsion isn't as new as we think There are about 27 species of fish including cuttlefish which move through the w water water- ter- ter and very quickly quickly quickly-by by expelling jets of water from their gill slits which are placed in just the right position to make full use of this this- form of power Tail and fins are are- quite motionless in this method of submarine travel If propulsion jet fish finds it is is- traveling in wrong direction it simply puts on emergency brakes by sucking in water through gill slits and expelling it from mouth