The deepest point in the Indian Ocean is the Diamantina Trench, which is located in the eastern part of the ocean, near the coast of Indonesia. Let's break down the answer into headings and bullet points for better understanding:

Diamantina Trench:
- The Diamantina Trench is the deepest point in the Indian Ocean.
- It is located in the eastern part of the ocean, near the coast of Indonesia.
- The trench is roughly 8,047 meters (26,401 feet) deep.

Other trenches in the Indian Ocean:
- Mariana Trench: It is the deepest point in the world and is located in the Pacific Ocean.
- Tonga Trench: It is located in the southwestern part of the Pacific Ocean.
- Sunda Trench: It is located in the eastern part of the Indian Ocean, near the coast of Indonesia.

Importance of the Diamantina Trench:
- The trench is an important area of research for scientists studying the geology and biology of the ocean.
- It is home to a diverse range of marine life, including deep-sea fish, squid, and octopuses.
- The trench also plays a significant role in the formation of tsunamis and earthquakes in the region.

Conclusion:
In conclusion, the Diamantina Trench is the deepest point in the Indian Ocean, located near the coast of Indonesia. It is an important area of research for scientists and is home to a diverse range of marine life. The trench also plays a significant role in the formation of tsunamis and earthquakes in the region.