The Sand tiger shark is the greatest shark of our waters, reaches weights of up to 180 kg and gets to measure almost three meters. It has head and great jaws, which they leave very long and acute acicular teeth, and in its flank it exhibits five branchial cracks. It presents two dorsal fins without thorns, of similar size among them; the previous ridge is located in front of half of the body and the second plus near the volume. The anal fin is a little more girl than the second ridge. Pedúnculo of great volume is very short, finishing in a volume heterocerca, with the inferior lobe little developed. The eyes lack nictitante membrane. The color oscillates between the greenish gray until the yellowish clear gray, and sometimes it presents/displays cleared spots of a darker tone in the back and flanks. The ventral zone is of cremoso white color. It is a fish very associated to the bottom and the fishing style has to do with that attitude. Looks for it in the depth with baits of great size. The bait is devoured and immediately it happens to the stomach. Perhaps for that reason it does not offer a great fight and sometimes it is engaged in as a dead weight.