They use their fins to fight off predators

Mosquito larvae, small crustaceans, plant material, and William Lin

To name a few, oysters, mud snails, octopus, mussels, horseshoe crabs, stickleback fish, mummichog fish, and clams.

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --M---H-G. That is, nine letter words with 3rd letter M and 7th letter H and 9th letter G. In alphabetical order, they are:

mummichog

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 8 words with the pattern ---MI-H--. That is, nine letter words with 4th letter M and 5th letter I and 7th letter H. In alphabetical order, they are:

beamishly

blemished

blemisher

blemishes

flemished

flemishes

mummichog

rammishly