Hagfish are great! Only ever seen them at The Deep in Hull, where they have Eptatretus burgeri. Also saw my first Chimaeras/Rabbitfish the same day (in fact only about 15min later) - Hydrolagus colliei. Not often you go to a zoo and see two new classes of vertebrate in less than half an hour!
Great shot, by the way - I managed a few slightly out-of-focus shots but this is excellent!