i got up one morning and turned on the lights to find something alittle strange swimming around. it was small maybe an 1/8 in diameter, kinda transparent with a yellow ball in its center with a little tail that forked at the end. It kinda looked like a clear sunny side up egg with a forked tail and it was thrashing around. Very weird. it swam behind my rocks before i could get a camara and i never saw it again.. can anyone explain?