The word "Sea cob" is an uncommon term that refers to a venomous fish species found in the ocean. However, when it comes to antonyms for this word, we can consider several alternatives. The antonyms of "Sea cob" can be divided into different categories, such as mammals, birds, insects, and plants. Some antonyms of Sea cob in the mammal category include elephants, lions, and tigers, while the bird category includes eagles, owls, and penguins. In the insect category, we have bees, butterflies, and ladybugs, while in the plant category, we can consider trees, flowers, and shrubs. Overall, the antonyms for Sea cob encompass a wide range of living organisms from various categories of species.