World Ocean Day: life and livelihoods Online Quiz

Bycatch refers to any unwanted fish and other marine creatures trapped by commercial fishing nets during fishing for a different species. This includes non-target fish, undersized fish, and protected marine animals.

According to the Food and Agriculture Organization (FAO), about 10-12% of the world's population (which is roughly 1 in 10 or 1 in 8 people) relies on fisheries and aquaculture for their livelihoods. Therefore, the statement that only 1 in 20 (5%) relies on it is false.

Overfishing depletes fish stocks, which are a primary source of protein for billions of people worldwide, thereby directly threatening global food security.

Overfishing is the removal of a species of fish from a body of water at a rate greater than that at which the species can naturally replenish its population.

When a fish population is overfished, the breeding stock is depleted to levels where they cannot reproduce fast enough to sustain or recover their population size.

Studies have found that ghost nets and other abandoned fishing gear make up about 46% of the total mass of plastic in the Great Pacific Garbage Patch.

According to the Food and Agriculture Organization (FAO), approximately 33% of global fish stocks were classified as overfished in 2015, showing a significant increase over previous decades.

While many fish stocks are overfished or fully fished, not all species are overfished; some fisheries are managed sustainably and maintain healthy population levels.

Global wild fish capture increased from around 19 million tonnes in 1950 to approximately 90-100 million tonnes by 2016, which represents an increase of about 5 times.

The oceans cover approximately 71% (commonly rounded to 70%) of the Earth's surface, containing about 97% of the Earth's water.

Coral bleaching occurs when corals experience stress, primarily from rising ocean temperatures driven by global climate change, causing them to expel the symbiotic algae (zooxanthellae) living in their tissues.