Fresh seafood, tomatoes and spices, it's filling and warm! I was served this in Spain and I've tried to recreate the recipe. The ingredient proportions can be changed depending on taste, and it works very well with squid!
If you cant be bothered making the stock, just buy a mixed pack of seafood from a supermarket! This way, everything can be prepared in the same pan.
If you want a more filling soup, add a handful of rice when adding the tomatoes. I used short grained rice and it worked wonderfully :)