  We report experimental discovery of tantalum polyhydride superconductor. It
was synthesized at high pressure and high temperature conditions using diamond
anvil cell combined with in-situ high pressure laser heating techniques. The
superconductivity was investigated via resistance measurements at pressures.
The highest superconducting transition temperature Tc was found to be ~30 K at
197 GPa in the sample that was synthesized at the same pressure with ~2000 K
heating. The transitions are shifted to low temperature upon applying magnetic
fields that supports the superconductivity nature. The upper critical field at
zero temperature {\mu}0Hc2(0) of the superconducting phase is estimated to be
~20 T that corresponds to GL coherent length ~40 angstroms. Our results suggest
that the superconductivity may arise from I-43d phase of TaH3. It is, for the
first time to our best knowledge, experimental realization of superconducting
hydrides for the VB group of transitional metals.
