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.
Stingrays are any of a number of flat-bodied rays noted for the long, sharp, venomous spines on their tails. They are cartilaginous fish and are related to sharks. Stingrays sometimes are placed in a single family, Dasyatidae, but often are separated into two families-Dasyatidae and Urolophidae.