All about base excess â to BE or not to BE. In 1948, Singer and Hastings introduced the concept of buffer base (BB). The change in BB from normal was called deltaBB (Î´BB). This change in BB was an expression of the non-respiratory (metabolic) component of an acid-base disturbance.
Empirically from http://www.usaswimming.org/_Rain..., free style is the fastest stroke. This is also called the front crawl (see Front crawl). However as Swimming stroke notes, there are at least 6 variations of that technique.
the fastest crocodile is the enormous saltwater crocodile at 25mph on land and 30 when swiming. saltwater crocodile at 25mph on land and 30mph in water.  Actually the fastest is the Johnston's Crocodile (Crocodylus johnstonii) It can gallop at speeds of up to 20 mph over short bursts.