Augenblick.com

Useful site with photos of Hydra. Includes 360 degree views that take a while to download.

Vacation.net

Single page with a reasonable amount of basic text and a couple of photos.

GreekIslands.com

Worth a visit to look a the five postcard views of the island. The text is a bit of a waste of time.

Saronicnet.com

A site with info on the various options when it comes to getting to and around Hydra. These range from personal helicopter transfers from Athens airport to 'Donkey transfers to accommodation on Hydra'.

Dilos.com

One photo and an 'under construction' notice.