Sevengill Shark

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Notorynchus cepedianus

Also known as: Broadnose Sevengill; Cowshark

Sharks Native Stable

Size & Weight

Average Length 70.8"

Max Length 118.0"

Average Weight 50.0 lbs

Max Weight 350.0 lbs

Lifespan 49 years

Habitat

Depth Range 0 - 450 ft

Water Temp 50-60°F

Bays; estuaries; kelp beds; rocky reefs; shallow to moderate

Behavior

Spawning Season Spring-fall mating

Migration: Seasonal movements; use SF Bay as nursery

Diet: Fish; rays; smaller sharks; seals; carrion

Fishing Tips

PNW Season Year-round; best summer-fall

View season chart →

Techniques: Heavy tackle; surf/bay fishing

Best Bait: Oily fish; cut bait; salmon heads

Eating Quality

Edibility Fair

Must process properly; strong flavor

State Records

Washington

220.0

lbs

California

276.0

lbs

Fun Facts

Seven gill slits (most sharks have 5); apex predator; aggressive; SF Bay important nursery

How to Identify

Seven gill slits (unique in Pacific); large hammer-shaped head; dark gray coloring; deep water

Commonly Confused With

Blue Shark Sharks

Compare Side-by-Side

Official Resources

WDFW (Washington) CDFW (California)

Sources: CDFW; WDFW

Change History (Last updated Feb 02, 2026 at 10:33 AM)

Date	Change	Old Value	New Value
Feb 02, 2026 10:33 AM	Updated Avg Length	—	70.8