Broadnose Sevengill shark

Sept. 18, 2023

Ecologists are naturally concerned when record-setting rain this year altered the Broadnose Sevengill shark nursery grounds in San Francisco Bay.

About the Broadnose Sevengill Shark:

  • It is a large seven-gilled with a wide head and short, blunt snout shark.
  • It is related to sharks that lived in the Jurassic Period about 300 million years ago.
  • They prefer tropical, temperate, shallow waters
  • Distribution:
    • It is found in all oceans except the North Atlantic and the Mediterranean Sea.
    • In the eastern Pacific Ocean, they are found from southeastern Alaska to southern Baja California, Mexico and from Colombia to Chile.
  • Biology and Behaviour
    • They can grow to a maximum length of 2.9 m. Females grow longer than their male counterparts.
    • They feed on anything, such as other sharks, rays, chimaeras, bony fish, hagfish, dolphins and porpoise meat, seals, shark egg cases and sea snails.
  • Conservation status
  • IUCN: Vulnerable