Butterfish
Peprilus tricanthus
Size
to 12"
Habitat
Coastal waters.
Baby Butterfish are often found sheltering in the tentacles of stinging jellyfishes, to which they are not immune. One slip and they're dead!
Astroscopus guttatus
Size
to 22" and 20 lbs.
Description:
Don't expect to see these fishes very often - they live buried in the sand, with just their eyes protruding. The eyes are directly atop the flat head, and the mouth is almost vertical. Of course, they are ambush predators. If you flush one from its hiding place, it will clumsily swim a short distance, and then rebury itself in just seconds. Stargazers are capable of producing weak electric currents from organs located behind the eyes. I doubt that it is enough to be dangerous to a diver, although it might be startling! Midshipmen are similar but smaller, with a continuous dorsal fin and luminescent spots instead of electrical organs.
More: Northern Stargazer ...