In chemistry water is normally represented as a bent molecule with an almost tetrahedral shape with two hydrogen atoms and two non bonded electron pairs.
What they have found is the two non bonded electrons pairs sort of merge between where they thought the two non bonded electrons were, much closer to the oxygen atom.
When water forms ice then the tetrahedral sort of returns. But when water is hydrogen bonded to some proteins, the water is triangular. The bent shape allows the hydrogen to share the electrons on another water.
