You can see that they are huddled together. This is because Blåhaj have lost their ability to produce enough body heat on their own. This is why it is really important to keep them warm and comfy in a loving home.

Here you see Blåhaj in their natural breeding grounds. Shortly after being born, they start looking for another organism to form a symbiotic relationship with and complete their migration. Blåhaj are social creatures and will be even happier sharing same host with multiple Blåhaj.