WIKISPECIES › BONNETHEAD

Bonnethead Shark

Sphyrna tiburo

Bonnethead Shark — Sphyrna tiburo
Photo: Sawyer Baran · CC BY · iNaturalist

Shark IN THE FISH ID CAMERA TABLE: Good DIFFICULTY

The smallest hammerhead, with a smooth, shovel/bonnet-shaped head (rounded, not scalloped). Gray-brown, usually 2-3.5 ft (3-12 lb) around Galveston. Easily distinguished from the big hammerheads by small size and rounded head.

⚖ Texas limits · 2026-27 license year
Sharks: 1/day all species combined · non-offset non-stainless circle hooks required in state waters · 24″ min  ·  verify at TPWD →

On the water

WhenWarmest months (May-September); largely a daytime, warm-water shark on the flats. Best on moving tide when crabs and shrimp are active; sight-fishing opportunities on clear flats.WhereShallow bay flats, seagrass and sand/shell bottoms in Galveston Bay, West Bay, and back-bay areas; also the surf and around jetties and channel edges. Prefers warm, shallow, clear-to-lightly-stained water over crab-rich bottom.HowBottom fishing on the flats and channel edges with fresh crab or shrimp on a light Carolina/fish-finder rig. Can be sight-cast on shallow flats. Often caught by anglers targeting redfish and black drum with natural baits.BehaviorUnusual among sharks - largely a crustacean feeder (crabs and shrimp) and the only shark known to intentionally eat seagrass. Roots along the bottom for blue crabs, so crab and shrimp baits are deadly; bottom scent is the draw.The fightLight, spirited runs and head-shakes on light tackle; a fun flats target, especially for kids and fly/light-spin anglers.

Baits that work

Tackle

Rod & reel7-7.5 ft medium spinning rod, 2500-4000 reel - light inshore gear.Line10-20 lb braid or mono.Leader18-24 in of 30-40 lb fluorocarbon/mono; wire usually unnecessary (they have flat crushing plates, not cutting teeth), and mono improves bites on the flats.Terminal1/0-4/0 non-offset, non-stainless CIRCLE hooks (required); small circle handles crab/shrimp well.RigLight Carolina rig or a small fish-finder with a 1/2-1 oz weight; a popping cork with shrimp also works.

The bait clock

☀ DawnFresh dead shrimp on bottom rig
Bonnetheads cruise the guts and flats early hunting crustaceans.
☼ MiddayHalf blue crab or fresh shrimp
A daytime crustacean specialist; crab baits in the surf and bays are the top producer.
☾ DuskCut crab or shrimp
Evening tide keeps them rooting the bottom for crabs into last light.

[{'months': [5, 6, 7, 8, 9], 'note': 'Warm months in the surf and lower bay; crab and shrimp baits.'}]

Primarily a daylight feeder on crabs; rarely targeted at night in Galveston.

Don’t confuse it with

Scalloped HammerheadScalloped HammerheadDIFFERENT LIMIT

Front edge of the hammer is notched/'scalloped'. 99" minimum — nearly all are released.

Great HammerheadGreat HammerheadDIFFERENT LIMIT

Hammer front edge nearly straight; tall sickle-shaped first dorsal. Legal at 99" (not prohibited), but high-mercury.

Atlantic SharpnoseAtlantic SharpnoseDIFFERENT LIMIT

Small, slender, pointed snout, often faint white spots. 24" minimum.

Blacktip SharkBlacktip SharkDIFFERENT LIMIT

Anal fin is PALE (not black-tipped) — that's the split from spinner. Black tips on the other fins. 24" minimum.

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Keep or release

Handling & releaseHardy; release is straightforward. Support the body, keep handling short, back out or cut the hook, and they swim off well. Their crushing plates aren't a cutting hazard but handle gently.On the tableGood, mild eating and low mercury for a shark thanks to small size and crustacean diet. Bleed and ice immediately as with any shark to avoid ammonia flavor.As baitRarely used as bait; valued as a light-tackle sport and light table fish.

The bar to beat

Texas state record24.3 lb · 50.12″ — Pamela JosephGulf of Mexico, TX, 2004
World record28.0 lb — Carter WellsPort Orange, Florida, 2012

Records as compiled in the IronJetty guide (Aug 2026) — verify current marks with TPWD records / IGFA.

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