New Jersey Scuba Diving

Atlantic Silverside

Menidia menidia

Size: to 7 1/2 "

Habitat: Generally inshore in harbors, inlets, and other quiet waters.

Notes: Forms large schools. Look for them swirling around the dive boat at the dock. More closely related to killifishes than herrings, Silversides are also found in freshwater.

US Fish & Wildlife Service Species Profile
Fishes of the Gulf of Maine

Insects

Insects are almost completely lacking in the marine environment. I recall something about saltwater having a very bad effect on their lungless respiratory system ( although this does not affect spiders. ) Insects are quite common in freshwater environments though, both as larvae and adults. A little digging can turn up myriad types, but be careful, some of them can bite very painfully.

Water Bugs
Water Beetles

Aquatic Larvae
Leeches

More: Insects ...

Atlantic Silverside

Baitfishes

Insects