The term 'shark relative' can be summarized by two crossword solutions: RAY and SKATE. Rays are a group of cartilaginous fish related to sharks, skates, and sawfish. They have flattened bodies and wide pectoral fins that they use to move through the water and for protection. Skates are also related to sharks and have a similar body shape to rays, but their pectoral fins are more pointed. They are found in temperate and tropical waters around the world.