There are two basic types of lasers used for cosmetic purposes: ablative and nonablative. Ablative lasers actually vaporize the top layers of damaged skin, while nonablative lasers work deeper in the skin without removing or otherwise damaging the top layers.
1 Adults average 3 m (9.8ft.) in length. 2  Males average 3.4 to 4.6 m (11.2-15.1 ft.) and weigh about 1,500 kg (3,307 lb.). 3  Females average 3 to 4 m (9.8 to 13.1 ft.) and weigh about 1,360 kg (2,998 lb.).  Beluga whales reach full size at about 10 years.
Thanks to waterâs buoyancy, whales can be far heavier without collapsing on themselves. A 100-foot-long blue whale can weigh 150 tons or more, three times heavier than a dinosaur of the same size. Much as it pains me to do it, I have to hand the title of âLargest Animal of All Timeâ to Team Cetacea. But if we look beyond the superlative, the close call between dinosaurs and whales highlights an underlying pattern in what giants can achieve.