Water shock: Blackpool Sea Life Centre's Martin Sutcliffe holding the egg that gave away the tank's secret residentStunned 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 resident 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.
Eggs-traordinary: The egg found in the Ocean tank could not have been laid by any of the known sharks that live there‘When we found the first egg during a routine dive in the ocean tank just before Easter, we initially thought it must be artificial, and part of the tank's theming decor,’ said senior aquarist Martin Sutcliffe.
‘We were all completely baffled when we took a closer look and realised it was real, and then we found another one about three weeks later.’
Sea Life's veterinary consultant and fish specialist Sue Thornton confirmed that the four-inch-long eggs come from a carpet shark - a family so-called because of their habit of lying static on the seabed.
Mr Sutcliffe said: ‘The ocean tank is a massive half-a-million litre display with numerous dark nooks and crannies amongst the theming, and it is just feasible that a small shark could have stayed hidden.
‘A small carpet shark would possiblyfeel threatened by the larger sharks in the tank, which is the only explanation we can come up with for it keeping out of sight for so long.’
source :dailymail
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