🌍 The Distribution of Water and Land on the Earth

• Earth’s surface is not evenly divided between land and water.
• 🌐 In the Northern Hemisphere, land is more widespread.
• 🌊 In the Southern Hemisphere, water dominates.
• This is why the Southern Hemisphere is sometimes called the “Water Hemisphere”.

---

🧭 Let’s Explore

• The circular lines = parallels of latitude.
• The lines radiating from poles = meridians of longitude.
• Question: Which hemisphere has more water?
  👉 Answer = Southern Hemisphere.
• Approximate distribution:
  • Northern Hemisphere → 61% water, 39% land.
  • Southern Hemisphere → 81% water, 19% land.

---

🌊 Oceans of the World

There are five major oceans on Earth:

1. Pacific Ocean 🌊 → Largest, covers more area than all land combined.
2. Atlantic Ocean 🌊 → Second largest, very important for trade routes.
3. Indian Ocean 🌊 → Third largest, touches India, Africa & Australia.
4. Southern Ocean ❄️ → Surrounds Antarctica.
5. Arctic Ocean 🧊 → Smallest & shallowest, around the North Pole.

📖 Definitions:

• Ocean → The largest body of salt water on Earth.
• Marine → Related to seas and oceans.

---

🌍 Oceans are Connected

• Though shown separately on maps, all oceans are actually connected.
• 🌊 Water flows freely → circulation of currents, exchange of marine life.
• This interconnection sustains global climate balance and biodiversity.

📸 Image suggestion: World ocean current circulation map.

---

🐬 Ocean Life (Marine Flora & Fauna)

🌱 Marine Flora

• Microscopic algae and seaweeds supply oxygen and form the base of the food chain.

🐋 Marine Fauna

• Colourful fish 🐠
• Corals 🪸
• Dolphins 🐬
• Whales 🐋
• Penguins 🐧
• Sharks 🦈
• Countless deep-sea creatures 🌌

📖 Definitions:

• Flora → Plant life of a region.
• Fauna → Animal life of a region.

---

🇮🇳 India and the Oceans

• The Indian Ocean is bounded by:
  • Asia (north), Africa (west), Australia (east), Southern Ocean (south).
• On either side of India:
  • Arabian Sea (west of India).
  • Bay of Bengal (east of India).
• India also has two major island groups:
  • Andaman & Nicobar Islands (Bay of Bengal).
  • Lakshadweep Islands (Arabian Sea).

---

✅ Key Takeaways

✔️ Southern Hemisphere = more water; Northern Hemisphere = more land.
✔️ Earth has 5 major oceans, but they are all interconnected.
✔️ Oceans = home to diverse marine flora & fauna.
✔️ India is surrounded by the Arabian Sea & Bay of Bengal and touches the Indian Ocean.

---