김 박사는 "애초 상어 간을 먹이로 썼지만 최근엔 '바다 눈'과 성분이 비슷한 먹이에 관심이 쏠리고 있다"고 말했다.
Dr. Kim said, "In the first place, shark liver was used as food, but recently, attention has been focused on food that has similar ingredients to 'sea eyes'."