Stunned aquarium staff have discovered that a shark they did not know they had has been living undetected in their ocean tank for years.
Staff at Blackpool Sea Life Centre were baffled when two shark eggs were discovered in a tank occupied by sharks which give birth only to live young.
The centre's marine experts speculate that one of several former curators must have introduced a small tropical carpet shark to the display without recording the fact, and it has been in hiding ever since.
Read more: http://www.dailymail.co.uk/news/arti...#ixzz1MoItDgyk
Who among us hasn't accidentally misplaced a shark.