This has a map showing attacks and they are definitely also happening in the Mediterranean.
I can definitely be wrong but I wouldn't trust this map. I can't find any reference of attacks near Ibiza online.
next commenter will claim you can't trust The Sun anymore, what's wrong with people?
You read the article or headline? "2-hour Mediterranean Sea attack"
It happened in the Strait of Gibraltar
Article is wrong. They mainly (like this one) happen in the Strait of Gibraltar on the ocean side. I think it never happened inside the Med so far.
TFA is about an Orca attack in the Mediterranean
Looks like TFA is wrong. According to other sources, the attack happened near Tarifa and Barbate in Spain, which are on the Atlantic side of the Strait of Gibraltar.