Sea Star Wasting Disease Insights

The video discusses a massive die-off of sea stars from Mexico to Alaska, attributed to sea star wasting disease. The disease has led to significant mortality, with symptoms including white lesions and dismemberment. Research points to a denzo virus as a potential cause, affecting sea stars' ability to defend against microorganisms. The loss of adult sea stars raises concerns about reproduction, but the presence of juveniles offers hope for repopulation.

What is the geographical range of the sea star die-off mentioned in the video?

• From Mexico to Alaska

• From California to Canada

• From Florida to Maine

• From Hawaii to Japan

Approximately how many species of sea stars are found in the Sailor Sea?

• 10

• 20

• 30

• 40

What is a common symptom of sea star wasting disease?

• White lesions

• Rapid growth

• Bright coloration

• Increased mobility

What happens to a sea star's arm as the wasting disease progresses?

• It grows longer

• It changes color

• It detaches from the body

• It becomes stronger

What is the 'poster child' species of sea stars mentioned in the video?

• Crown-of-thorns starfish

• Blue star

• Ochre star

• Sunflower star

What is a visible sign of tissue degradation in sea stars affected by the disease?

• Bright red spots

• White lesions

• Green patches

• Black stripes

What is the primary challenge in identifying the cause of sea star wasting disease?

• Lack of funding

• Difficulty in marine environments

• Too many species affected

• No visible symptoms

What type of virus is associated with sea star wasting disease?

• Rhinovirus

• Coronavirus

• Densovirus

• Retrovirus

Why is the mass die-off of adult sea stars particularly concerning?

• They are the main food source for fish

• They are the reproducing individuals

• They clean the ocean floor

• They are a tourist attraction

What is the hope for the juvenile sea stars observed at the site?

• They will become predators

• They will migrate to other areas

• They will grow unaffected by the disease

• They will change color