Data reflected the progression of the event by recording shifts in depth distributions and spatial abundance of fish populations.

1
Data reflected the progression of the event by
recording shifts in depth distributions and
spatial abundance of fish populations.
Photo Scott Boyd
Photo Hood Canal Event Response Team
Photo Hood Canal Event Response Team
2
Progression of Event Southern Hood Canal

• Sund Rock
• Almost all life above 20-30 ft.
• Wolf eels out in the open.
• Below 90 ft some crab, flatfish

• Sund Rock
• Signs of stress continue
• Most fish above 30 ft
• At 150 ft, healthy-looking sea pens, crab,
  flatfish

• Sund Rock
• Dead and dying animals in very shallow water

Photo Janna Nichols
Stress Mortality
Stress
Fish shallow
Mid Sep
Oct 1
Mid Oct
Mortality
Lethargy
Distribution Changes
Death Decomposition

• Sund Rock
• Many dead lingcod
• Dying sea cucumbers sunflower stars
• Nearly all fish in shallow water (0-20 ft)
• 75 copper rockfish, sluggish
• 150 perch
• Wolf eels lethargic

• Octopus Hole
• Fish lethargic and shallow
• Large school of rockfish at 30 ft, moving slow.

• Sund Rock
• much of what was struggling is now dead and dying
• 20 ft or less 20-30 copper rockfish and 3-4
  vermilion rockfish, 15-20 pile perch, 2 large
  schools of shiner perch, 11 striped perch, 100
  coonstripe shrimp, 4-5 red rock crab
• 50-100 sea cucumbers dead or dying

• Sund Rock
• Little life below 32 ft

Photo Janna Nichols
3
Progression of Event Northern Hood Canal
Photo Janna Nichols

• Pulali
• Stressed sunflower stars, sea cucumbers, sea lemon

• Gobie Gardens, Black Point, The Pinnacle
• lots of fish, good activity, nothing unusual

• Good life and activity but there are subtle
  indications that the low O2 is affecting the
  critters

Photo Janna Nichols
Normal Observations
Stressed Invertebrates
Subtle changes
Mid Sep
Mid Oct
Oct 1
Some stress
Good Activity
Good Activity, Normal Distribution

• Rosiess Ravine
• Stressed anemones
• Flagpole
• Stressed wolf-eel

Rosies Ravine Good variety, life, and activity
to 110 ft 

• Pulali, Pinnacle
• Good life and activity down to 80 fsw.