The Blue Damselfly (or young Dragonfly?)

Definitely a damselfly.  A dragonfly nymphs lives under water and some species can even eat very small fish. Mature Dragonflies have these big eyes more up front and damselflies have these kinda hammerhead shark heads. Also, they tend to be skinny while dragonflies tend have these kinda V abdomens and thicker thoraxes. The biggest giveaway is usually the wings as they fold behind them kinda like a bird while dragonflies prefer to lay their wings kinda like a jet.

Hoped that helped! I love both dragonflies and damselflies and loved catching them by hand as a kid! Amazing you were able to get such a still shot, they sure are fast!