21. Now, scientists have discovered that bloodworms have something else in common with Jaws : their teeth contain metal. 22. Once weekly feeding of bloodworms , tubifex, brine shrimp and other meaty foods will complete the perfect diet. 23. Change your bait frequently because bloodworms , which are marine animals, live only about five minutes in fresh water. 24. Those machines will be stocked with live eels, bloodworms , and other delicacies favored by ocean-going fish. 25. Their staple diet is mostly bloodworms and other insect larvae, but they also feed on tadpoles and small fish. 26. They are particularly fond of frozen bloodworms , and will often attempt to consume worms nearly as long as they are. 27. The first reference to Regulan bloodworms was as an insult in the " Star Trek : Phase II ". 28. The scientists say that bloodworms 'rather specific use of copper suggests that the metal plays more roles than its structural one. 29. It has also been found in living systems such as the jaws of the marine bloodworm " Glycera dibranchiate ". 30. Marine bloodworms are not particularly evil, though like Bond's nemesis turned friend, they do their killing with their teeth.