Maine lobster is a true, clawed lobster, the species Homarus americanus. "Alaska lobster" isn't a lobster at all. It's a market name commonly used for the spot prawn, a large shrimp species found in the North Pacific, sold under a name that borrows lobster's reputation rather than describing what the animal actually is.
This isn't a case of two regional varieties of the same thing, the way Maine and Canadian lobster are genuinely close relatives. It's two different kinds of animal, one a true lobster and one a shrimp, being compared as if they were variations on the same seafood.
What Maine lobster actually is
Maine lobster refers to Homarus americanus, the clawed lobster native to the cold waters of the Northwest Atlantic, primarily off the coast of Maine and neighboring Canadian waters. It has the two large front claws most people picture when they think "lobster," along with meat in the tail, claws, and knuckles that's firm, substantial, and sweet.
This is the lobster species behind the vast majority of lobster sold and served in the United States, whether whole, as tails, or in prepared dishes. When a menu says lobster without further qualification, this is almost always the species behind it.
Why "Alaska lobster" isn't a lobster
The honest answer is that true lobsters don't live in Alaskan waters at all. Homarus americanus and its close relatives need water temperatures that Alaska's cold North Pacific and Arctic waters simply don't provide, which is why their range is essentially limited to the colder Atlantic. There's no native Alaskan lobster population to name a product after in the first place.
What's actually sold as "Alaska lobster" or "Alaskan lobster" is typically the spot prawn, Pandalus platyceros, the largest shrimp species found in the North Pacific. It's a genuinely prized catch, sweet and substantial for a shrimp, which is likely why it picked up a lobster-adjacent marketing name at some point. But it's a shrimp by every biological measure, not a lobster given a regional name the way Maine and Canadian lobster are two names for close relatives within the same species group.
How the naming holds up against labeling rules
FDA seafood labeling guidance requires a qualifying term when a product isn't a true lobster but is being marketed alongside that name, a rule that exists specifically because names like this can mislead a buyer into thinking they're getting the same animal. "Spot prawn" sold plainly as spot prawn isn't a labeling problem. A product marketed as unqualified "lobster" when it's actually a different species would be.
"Alaska lobster" sits in a gray area common in seafood marketing: it's not claiming to be Maine lobster specifically, but the word "lobster" in the name still does real work in shaping expectations about what a buyer is getting, even though the modifier "Alaska" is doing the job of separating it from a true lobster claim.
Taste and texture: related but not the same
Spot prawn and Maine lobster are both sweet, both considered a treat, and both command a premium price, which is likely part of why the comparison exists in the first place. But the actual eating experience differs in ways that matter if you're expecting one and get the other.
Maine lobster meat is firm and substantial, especially in the tail, with a texture that holds up well to being pulled apart by hand or served whole in the shell. Spot prawn, being a shrimp at its core, has a more delicate texture throughout, closer to a large, sweet shrimp than to lobster's denser bite. Neither is a lesser version of the other; they're simply different animals that happen to occupy a similar spot on a seafood menu.
How the two compare on price
Genuine Maine lobster is priced against a wild-caught, often market-rate supply chain, similar to the market pricing dynamics covered for lobster and crab generally. Spot prawn, while genuinely a premium product in its own right, is typically priced closer to a large or jumbo shrimp tier than to true lobster, even when it's marketed under a lobster-adjacent name. Seeing a meaningfully lower price attached to "Alaska lobster" compared to Maine lobster on the same menu is itself a reasonable clue about which animal is actually being served, since true lobster's cost structure rarely lines up with shrimp-tier pricing.
This isn't a hard rule, since pricing varies by region, season, and the specific supplier, but a large gap between a "lobster" item's price and what Maine lobster typically costs in the same market is worth a second look before assuming it's the same animal.
Sourcing and sustainability
Spot prawn fisheries in the North Pacific are generally smaller-scale and more tightly managed than the broader shrimp supply chain, which is part of why spot prawn carries a premium reputation among people who know the difference, even without the lobster branding. Maine lobster fishing is subject to its own well-established regulations, including trap limits and size restrictions meant to protect breeding populations, a different regulatory framework suited to a very different animal and fishery.
Neither is inherently a more sustainable choice than the other in a simple sense; both come from fisheries with their own management practices specific to the species and region involved. What matters more for a buyer is knowing which animal is actually being sourced, since sustainability claims and certifications are generally tied to the specific species and fishery, not to a marketing name that blurs the two together.
What Alaska is actually known for
If the goal is a genuinely Alaska-sourced luxury shellfish, king crab and snow crab are the real answer, both legitimately caught in Alaskan waters and both holding the kind of size, price point, and prized reputation that lobster holds elsewhere. Alaska's cold waters, the same ones that rule out true lobster, are exactly what makes it excellent crab habitat, which is why crab, not lobster, is the state's actual seafood claim to fame.
What this means when you're ordering
If a menu or product lists "Alaska lobster," knowing it's very likely spot prawn rather than a true lobster is useful information for setting expectations, not a reason to avoid it. It's a legitimately good product on its own terms. The confusion only becomes a problem when it's assumed to be a regional cousin of Maine lobster rather than a different animal entirely.
For an actual Maine lobster experience, Classic and Grilled Maine Lobster Tail and a Surf & Turf pairing are built around the true clawed species, not a lobster-branded substitute. If crab is more specifically what you're after, Snow Crab Legs, genuinely sourced from cold northern waters the same way Alaska's real crab fishery is, is the closer match to what "Alaska" actually does well in seafood. For how to tell either lobster or crab is properly cooked once you have it, our lobster tail doneness guide covers the visual and temperature cues in detail.
Other seafood names that borrow a more famous species' reputation
"Alaska lobster" isn't an isolated case; seafood marketing has a long history of naming a lesser-known but genuinely good product after a more famous, more expensive one to help it sell, a practice that shows up across many different species pairings beyond spot prawn and true lobster. "Langostino lobster," for instance, refers to a small crustacean more closely related to a hermit crab than to true lobster, similarly borrowing lobster's reputation despite being a genuinely different animal by any biological measure. Understanding this broader pattern helps explain why "Alaska lobster" specifically follows a well-established seafood marketing convention rather than being an unusual or uniquely misleading case.
Recognizing this pattern is useful beyond just this specific comparison, since a buyer who understands that a lobster-adjacent name doesn't guarantee an actual lobster is better equipped to ask the right clarifying question, "is this a true lobster or something else marketed with that name," whenever a similar situation comes up with a different seafood product entirely.
How to identify true lobster versus spot prawn visually
Beyond checking labeling and price, as covered earlier in this guide, a few visual cues help distinguish true Maine lobster from spot prawn sold as "Alaska lobster" even before cooking. True lobster has the characteristic large front claws and a segmented tail with the meat concentrated specifically in the tail and claws, a body structure entirely different from a shrimp's, which has no claws at all and carries its edible meat distributed along a curved body and tail. Spot prawn, despite its large size for a shrimp, retains this basic shrimp body plan, curved and clawless, which makes visual identification straightforward once you know what to look for, regardless of what marketing name a specific product carries.
This visual distinction is worth knowing specifically for anyone buying seafood directly from a counter or market, where seeing the actual animal, rather than relying solely on a printed label or a menu description, gives an immediate, reliable way to confirm which species is actually being sold.
Cooking differences between true lobster and spot prawn
Because spot prawn and true lobster are genuinely different animals with different structures, they also cook somewhat differently despite both being shellfish. Spot prawn, like other shrimp, cooks considerably faster than lobster tail, typically in just a couple of minutes rather than the longer cooking time a lobster tail generally requires given its greater mass and denser meat structure. Applying lobster-length cooking times to spot prawn risks significant overcooking, given how much faster this shrimp species cooks through compared to true lobster.
This is a practical, direct consequence of the same biological distinction covered throughout this guide: since spot prawn isn't actually a lobster, the cooking guidance that applies to true lobster tail doesn't transfer directly, and treating "Alaska lobster" as requiring lobster-specific cooking times is a mistake that can leave the dish considerably overcooked by the time it reaches the table.
The short version: Maine lobster is a real lobster. "Alaska lobster" is a large, genuinely tasty shrimp wearing a lobster-adjacent name. Knowing which one is actually on the plate is the difference between ordering with accurate expectations and being surprised by the texture.