Hydrus is a steel roller coaster at Casino Pier in Seaside Heights, New Jersey.

After the Star Jet roller coaster was destroyed (along with a large portion of the Casino Pier) during Hurricane Sandy in 2012, it took almost three years until permission was granted to rebuild; this permission to rebuild included a new roller coaster.

[3] After swapping land with the city,[4] however, it was decided that this new coaster would not be built on the pier over the water (as the 1970 Jet Star and the 2002 Star Jet had been), but it would instead be built over the beach to prevent a repeat of what had happened with the hurricane.

[5] In late 2016, it was announced that the roller coaster replacing Star Jet would be a Euro-Fighter manufactured by Gerstlauer.

New Jersey governor Chris Christie was present for a ribbon-cutting ceremony on May 26[4] which occurred several weeks after a soft opening of the ride.