On top of that, it's unlocked and very compact. In testing around the San Francisco Bay Area, the MiFi 6620L performed very well, with excellent 4G LTE Internet speed. But all of that comes at a high price. The Jetpack costs $200, or $50 if you're willing to sign up for a two-year contract.
Rays account for about half of all elasmobranch species. Of the 500 or more described ray species, there are over 150 stingray species that are assigned to approximately 20 genera. Freshwater stingrays of the family Potamotrygonidae are assigned to the genera Paratrygon, Plesiotrygon, Heliotrygon and Potamotrygon.
A few members of the suborder, such as the manta rays and the porcupine ray, do not have stings. Stingrays are common in coastal tropical and subtropical marine waters throughout the world. There are species in warm temperate oceans, and some found in the ocean. Some live in fresh water. Most stingrays live at or near the bottom of the water, but some are pelagic.