There are what's known as California Spiny Lobsters:
What California spiny lobsters lack in claws, they make up for in body meat. Compared to Maine lobsters, California spiny lobsters have more tail meat and are sweeter. They’re considered one of the most desirable lobsters in the world. They are from the waters off Santa Barbara and the Channel Islands and brought straight from the dock to our customers.
Spiny lobsters are everywhere, and they prefer warmer water. Not everyone agrees that they're "one of the most desirable lobsters in the world". The kind you see around here are called "rock lobster". If you buy a frozen lobster tail, it's probably a rock lobster tail. And then there're the Caribbean lobsters, which are also spiny lobsters.
I didn't realize that "wild Atlantic salmon" pretty much don't exist anymore; what you see at the store that's called Atlantic salmon is farmed. Even more interesting:
Salmon is a generic name that gets applied to a couple of different genera and overlaps with trout. All Pacific salmon and rainbow trout — which includes steelhead (aka ocean trout) — are labeled under Oncorhynchus. Suffice it to say, the anadromous steelhead (like salmon, it's born in freshwater, migrates to the ocean, then heads back to its freshwater birthplace to spawn) falls into the same category as salmon.
And that, I suppose, is why salmon trout look so much like small salmon.