Facts about Smalleye Hammerhead

1. 12

   Catches of Eusphyra blainvillei in commercial fisheries remain minimal compared to larger hammerhead species, with most specimens documented from bycatch rather than targeted operations.

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2. 11

   Ovoviviparity allows smalleye hammerhead embryos to develop within the mother's body while receiving nutrients from a yolk sac rather than a placental connection.

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3. 10

   Females of this species mature sexually around 4.5 feet in length, making them reach reproductive age at sizes comparable to their maximum adult dimensions.

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4. 09

   Gill slits numbering five pairs on each side allow the smalleye hammerhead to extract oxygen from deep oceanic waters where it spends most of its life.

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5. 08

   Nocturnal hunting behavior in Eusphyra blainvillei allows this species to avoid competition with larger hammerhead sharks that dominate daytime feeding grounds on continental shelves.

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6. 07

   Identifying smalleye hammerheads in the field proves difficult because their eyes are proportionally smaller than those of related hammerhead species, reflecting their deep-water adaptation.

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7. 06

   Scientists first formally described Eusphyra blainvillei in 1821, naming it after the distinctive hammer-shaped rostrum that distinguishes it from other shark species.

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8. 05

   Dietary studies reveal the smalleye hammerhead feeds primarily on small fish and crustaceans found along continental shelf environments at depths exceeding 24 meters.

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9. 04

   The smalleye hammerhead's flattened head structure contains specialized ampullae of Lorenzini that detect electrical fields generated by prey organisms on the seafloor.

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10. 03

    Viviparous reproduction in the smalleye hammerhead produces between four and sixteen pups per litter, with females gestating offspring for approximately eleven months.

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11. 02

    Eusphyra blainvillei inhabits tropical and subtropical waters between 24 and 200 meters depth along continental shelves and slopes.

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12. 01

    Maximum lengths of 5.2 feet make the smalleye hammerhead one of the smallest hammerhead shark species in the Atlantic and Pacific oceans.

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