Goblin sharks eat bony fish, squid, and crustaceans found in the deep ocean. They hunt at depths of 800 to over 3,000 feet along continental slopes, where food is scarce and every meal counts. What makes their diet especially interesting is not just what they eat, but the extraordinary way they catch it.
Primary Prey Items
The goblin shark’s diet centers on three main categories: bony fish, cephalopods (like squid), and crustaceans. Among fish, grenadiers (also called rattails) are a confirmed staple. Researchers examining the stomach of one specimen found two large grenadiers inside. These bottom-dwelling fish are abundant along the continental slopes where goblin sharks live, making them a reliable food source in an environment where prey is relatively sparse.
Squid and other soft-bodied animals round out the diet. The U.S. Fish and Wildlife Service notes that goblin sharks’ thin, pointed teeth are well suited for gripping the soft bodies common among deep-sea prey like squid and rattail fish. Crustaceans, including deep-water shrimp and crabs, also appear in stomach contents, though less is documented about which specific species they target. Beyond these confirmed prey groups, details are limited simply because so few goblin sharks have ever been captured and examined.
How Goblin Sharks Find Prey in Total Darkness
At the depths where goblin sharks live, virtually no sunlight penetrates. Hunting by sight isn’t an option. Instead, the goblin shark relies heavily on electroreception, a sensory system shared by all sharks but taken to an extreme in this species. Its long, flattened snout is densely covered with tiny organs called ampullae of Lorenzini, which detect the faint electrical fields generated by the muscles and nerves of nearby animals.
Think of the snout as a forward-projecting prey detector. As the shark glides slowly through deep water, its broad, paddle-shaped rostrum sweeps the area ahead, picking up electrical signatures from fish, squid, or crustaceans hiding near the seafloor or drifting in the water column. This sensory advantage is critical in an environment where other cues like light and even scent disperse slowly.
The Slingshot Jaw
The goblin shark’s most remarkable adaptation is how it captures prey once it’s detected. Unlike most sharks that swim into their food with an open mouth, the goblin shark launches its jaws forward in a motion researchers describe as “slingshot feeding.” It is the fastest and most extreme jaw protrusion ever recorded in any shark species.
Here’s how it works. The shark first opens its mouth in an expansive phase lasting about 146 milliseconds. Then both jaws shoot forward suddenly, with the lower jaw reaching a peak speed of 3.14 meters per second (roughly 7 miles per hour) and the upper jaw hitting 1.6 meters per second. The jaws extend outward 8.6 to 9.4 percent of the shark’s total body length, which is 2 to 9.5 times farther than any other shark can protrude its jaws. The entire strike, from launch to grasping the prey, takes less than a second.
This mechanism lets the goblin shark snatch prey from a distance without needing to lunge its entire body forward. That’s a significant energy advantage in the deep ocean, where cold temperatures and limited food make conserving calories essential. The lower jaw moves faster than the upper jaw because it swings upward as it extends, adding rotational speed to the forward thrust. Once the teeth close around the prey, the jaws retract back into the head, pulling the food inward.
Teeth Built for Gripping, Not Cutting
A goblin shark’s teeth look nothing like the broad, serrated blades of a great white. They are long, slender, and spike-shaped, more like needles than knives. These teeth are designed to pierce and grip rather than slice. When the jaws snap shut on a soft-bodied squid or a slippery fish, those thin fangs act like a cage, preventing the prey from wriggling free during the split second it takes for the jaws to retract.
This tooth shape tells us something important about diet. Sharks that eat hard-shelled prey like clams or sea urchins tend to have flat, plate-like teeth for crushing. Sharks that tear apart large prey have wide, serrated teeth. The goblin shark’s needle-like dentition points to a diet dominated by small, soft, or moderately firm animals that need to be grabbed quickly and held securely. It’s a perfect match for the squid, rattails, and crustaceans found in their stomachs.
Energy Conservation and Feeding Frequency
The deep ocean is cold, often hovering just a few degrees above freezing, and food is far less abundant than in shallower waters. For an animal as large as a goblin shark (adults typically reach 10 to 13 feet), this creates a serious energy budget problem. Every movement burns calories that may take days or weeks to replace.
Goblin sharks appear to solve this by being ambush predators rather than active hunters. Their soft, flabby bodies and small fins suggest they are not fast or endurance swimmers. Instead, they likely drift slowly through the water column, using their electrosensory snout to scan for prey and striking only when something comes within range of that slingshot jaw. This sit-and-wait strategy minimizes the energy spent per meal, a common adaptation among deep-sea predators where the math of calories in versus calories out leaves almost no margin for waste.
No reliable data exists on how often goblin sharks feed in the wild. Given the low metabolic rates typical of deep-sea fish living in near-freezing water, they likely eat far less frequently than shallow-water sharks of similar size. A single large grenadier or a few squid could sustain them for an extended period.