A Japanese aquarium is asking peoples to make video calls to eels - so the creatures remember that humans exist.
An eel
The Sumida Aquarium in Tokyo has been shut since March because of the coronavirus pandemic, and its animals have become used to a human-free environment.
Eels have started to forget about people and now hide when keepers approach them, meaning it is difficult to check on their health.
A spokesman for the aquarium said: ''Creatures in the aquarium don't see humans except keepers and they have started forgetting about humans.
''Garden eels in particular disappear into the sand and hide every time the keepers pass by.
''Let us make an emergency plea: Could you show your face to our garden eels from your home?''
The aquarium has set up five tablets facing the tank housing the eels, with enthusiasts asked to connect with the animals via FaceTime.