“So, sound the trumpets, unleash the curs, and announce that we've got the hydra headed beast cornered in hills!”

“The world is hydra headed, as old as the rocks and as changing as the sea, enmeshed inextricably in its ways.”

“Do polyps of other cnidarian species have a tissue dynamics similar to that of hydra?”

“The exoplanet is orbiting around the red dwarf star TW Hydrae within the constellation Hydra, located 176 light-years from Earth.”

“The well-known open cluster NGC 2548, perhaps better known by the name Messier 48, is situated due west of alpha Hydrae right on the constellation Monoceros boundary.”