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.
Making the world better, one answer at a time. Some species of stingrays are endangered due to pollution and overfishing. Some species of stingray that are endangered are the Ganges Stingray, Giant Freshwater Stingray, Izu Stingray, and the Marbled Freshwater Stingray.he endangered species are the   * Ganges Stingray  * Marbled Whipray  * Mekong Freshwater Stingray  * White-Edge Freshwater Stingray  * Thorny Freshwater Stingray   For more details, please see sites listed below. + 20 others found this useful.