I kept one when I lived in Florida, and yes, they are escape artists. On more than one occasion, she had left her tank (110 gallon) to swim instead in the sump of a larger tank. This was always an indication that the water quality was off in her tank. To get to the other tank's sump, she had to get out of her tank, crawl across a carpeted floor approximately 20 feet, get between the wall and the stand of the other tank, and open a lid that covered the sump.