calamars

In a sentence

• M'agraden els calamars fregits molt cruixents.

  I like very crispy fried squid.

  Here, 'calamars' means 'squid', specifically referring to fried squid as a dish.

• Els calamars viuen en aigües profundes de l'oceà.

  Squids live in the deep waters of the ocean.

  In this sentence, 'calamars' refers to the animal, squid, in its natural habitat.

• Quan anava a pescar, sempre veia calamars al mar.

  When I used to go fishing, I always saw squids in the sea.

  Here, 'calamars' again refers to squids but in the context of encountering them while fishing.