luninous white albino eels

I was diving in Wast Water, Wasdale, Cumbria and found thousands of
weird bright white eels about a foot to a foot and a half long. Twas a
night dive and our approaching torches made the eels stick their head
into the mud to avoid our light. They didn't have any fin on thier
back as i remember. Any one any idea what they could be? I thought
these could be some ancient fish trapped along with the Artic Char in
Cumrias deep waters or are they just another wierd Lamprey type
creature? I didn't notice if they had teeth or even a jaw. Any
feedback most welcome. Dave