Spotted sand diver eel

[fishoholic]

I (sort of) saw my eel in the tank last night. I saw his tail sticking out and I saw his side sticking out of the sand, I guess he got his colour back because now he looks very close to the picture above. We moved the sand around in front of him and he wiggled his tail so at least we know he's still alive I haven't seen him eat yet but there is a lot of live worms/pods/baby mysis etc. in the tank for him to eat. My concern is that his head is buried under the sand. In the lfs his head was poking out of the sand and only his body was covered. Not sure what to think....?????

Edit: I called the lfs and asked, He let me know that it will take about 2 weeks to a month for them to be comfortable in the tank. Once they're comfortable in the tank they will poke their heads out from the sand more often and they will come out and even swim around a bit with the other fish.