TED-Ed: Claire Simeone: The lovable (and lethal) sea lion

Sea lions, often seen as lazy beach dwellers, are actually skilled endurance hunters with remarkable adaptations for deep diving and hunting. They can dive up to 400 meters, using their flexible rib cage and lungs to manage pressure. Their vision is adapted for low light, and their sensitive whiskers help detect prey. Sea lions have excellent memories, remembering hunting grounds and social relationships for decades. However, climate change poses a threat, as warming oceans lead to toxic algae blooms that harm sea lions. Understanding these changes can help protect sea lions and other marine life.

What allows sea lions to dive to great depths without being affected by pressure?

• Their ability to hold their breath for long periods

• Their streamlined body shape

• Their thick layer of blubber

• Their collapsible rib cage and springy lungs

How do sea lions' eyes adapt to see underwater?

• They have a flat lens like humans

• They have a rounder lens and expandable pupils

• They use echolocation

• They rely on their sense of smell

What unique feature do sea lions use to detect the movement of fish in water?

• Their sensitive whiskers

• Their powerful tail

• Their large ears

• Their sharp teeth

What environmental change is causing harm to sea lions?

• Rising sea levels

• Increased ocean salinity

• Toxic algae blooms

• Decreased fish populations

Why is it important to study the health of sea lions?

• To improve fishing techniques

• To increase tourism

• To understand ocean health and protect marine life

• To develop new diving equipment