Mine did that too. I bought one and then a few months later I saw one end on one side of the tank and the other end about 2.5 ft away. I was skeptical that they got that long. Then one night I searched it out with my flashlight and there were actually two. I checked and sea cukes can reproduce both sexually and asexually. In our cases, they did it asexually by basically cutting itself into two sea cukes and then regenerating any missing bits.
Christy
