🌍 Current Affairs & World Ocean Day
1.Q: World Ocean Day is observed every year on which date?
✅ June 8
2.Q: Which organization officially recognizes World Ocean Day?
✅ United Nations (UN)
3.Q: In which year did the United Nations officially recognize World Ocean Day?
✅ 2008
4.Q: At which conference was the idea of World Ocean Day first proposed?
✅ Earth Summit, Rio de Janeiro (1992)
5.Q: Which Sustainable Development Goal focuses on oceans?
✅ SDG 14 – Life Below Water
6.Q: What is the deepest point in Earth's oceans?
✅ Challenger Deep
7.Q: In which trench is Challenger Deep located?
✅ Mariana Trench
8.Q: Approximately how deep is Challenger Deep?
✅ About 11,000 metres
9.Q: Which ocean is the deepest?
✅ Pacific Ocean
10.Q: Which ocean contains the greatest number of islands?
✅ Pacific Ocean
11.Q: What is the largest animal ever known to exist on Earth?
✅ Blue Whale
12.Q: How long can a Blue Whale grow?
✅ About 30 metres
13.Q: Which is the largest shark species?
✅ Whale Shark
14.Q: Which marine mammal can dive deeper than 2,000 metres?
✅ Sperm Whale
15.Q: Which animal is known as the "Unicorn of the Sea"?
✅ Narwhal
16.Q: What are coral reefs built by?
✅ Coral Polyps
17.Q: Which is the largest living structure on Earth?
✅ Great Barrier Reef
18.Q: How many kilometres does the Great Barrier Reef extend?
✅ About 2,300 km
19.Q: Coral belongs to which animal group?
✅ Cnidarians
20.Q: What is the biggest threat to coral reefs today?
✅ Climate Change
21.Q: What is the scientific study of oceans called?
✅ Oceanography
22.Q: What instrument measures ocean depth using sound waves?
✅ Sonar
23.Q: What does SONAR stand for?
✅ Sound Navigation And Ranging
24.Q: Which ocean layer receives sunlight?
✅ Epipelagic Zone
25.Q: What is the dark, deepest ocean zone called?
✅ Hadal Zone
26.Q: Oceans absorb approximately what percentage of excess heat from global warming?
✅ About 90%
27.Q: Oceans absorb roughly what percentage of human-produced carbon dioxide?
✅ About 30%
28.Q: What is ocean acidification?
✅ Decrease in ocean pH due to CO₂ absorption
29.Q: Which gas is mainly responsible for ocean acidification?
✅ Carbon Dioxide
30.Q: What are marine heat waves?
✅ Periods of unusually warm ocean temperatures
31.Q: Which fish is capable of generating electricity?
✅ Electric Ray
32.Q: Which marine animal has blue blood?
✅ Octopus
33.Q: What gives octopus blood its blue colour?
✅ Hemocyanin
34.Q: Which sea creature can regenerate lost arms?
✅ Starfish
35.Q: Which marine animal has no brain, heart or bones?
✅ Jellyfish
36.Q: What is the largest source of marine litter?
✅ Plastic
37.Q: What are microplastics?
✅ Plastic particles smaller than 5 mm
38.Q: Which ocean garbage patch is the largest?
✅ Great Pacific Garbage Patch
39.Q: Between which states of the USA and Hawaii is the Great Pacific Garbage Patch located?
✅ California and Hawaii region
40.Q: What is overfishing?
✅ Harvesting fish faster than populations can recover
41.Q: Which ocean is named after a country?
✅ Indian Ocean
42.Q: Which is the largest bay in the world?
✅ Bay of Bengal
43.Q: Which sea lies between India and the Arabian Peninsula?
✅ Arabian Sea
44.Q: Which Indian state has the longest coastline?
✅ Gujarat
45.Q: Which Indian island group lies in the Bay of Bengal?
✅ Andaman & Nicobar Islands
46.Q: Why are oceans called Earth's lungs?
✅ They produce about half of Earth's oxygen.
47.Q: Why are mangroves called coastal guardians?
✅ They protect shorelines from erosion and storms.
48.Q: Why is biodiversity important in oceans?
✅ It maintains ecosystem balance.
49.Q: Why are phytoplankton important?
✅ They form the base of marine food chains.
50.Q: Why should everyone celebrate World Ocean Day?
✅ Healthy oceans are essential for life on Earth.
51.Q: Which explorer completed the first solo descent to Challenger Deep in 2012?
✅ James Cameron
52.Q: What is the world's longest mountain chain?
✅ Mid-Ocean Ridge
53.Q: Which ocean current warms Western Europe?
✅ Gulf Stream
54.Q: Which marine ecosystem stores the most carbon per unit area?
✅ Mangrove Forests
55.Q: What percentage of the ocean remains unexplored?
✅ More than 80%
56.Q: Which marine mammal sleeps with one eye open?
✅ Dolphin
57.Q: What is the largest protected marine area in the world?
✅ Ross Sea Marine Protected Area
58.Q: Which ocean is growing due to seafloor spreading?
✅ Atlantic Ocean
59.Q: What is the primary source of energy for ocean ecosystems?
✅ The Sun
60.Q: Complete the statement:
"No Blue, No ____."
✅ Green
