The term SEA PREDATOR can be broken down into four crossword solutions: ORCA (4 letters), EEL (3 letters), ERN (3 letters), and MAKO (4 letters). The ORCA, also known as the Killer Whale, is the largest member of the dolphin family and is found in all oceans. Eels are elongated fish that inhabit both freshwater and saltwater environments. The ERN is a type of seabird that feeds on fish and other marine life. The MAKO is a species of mackerel SHARK found in temperate and tropical waters around the world. Finally, the SHARK is a large fish with a cartilaginous skeleton and is found in all oceans.