The AKASO Brave 4 is an affordable action camera that offers impressive features for scuba diving enthusiasts. With its 20MP photo resolution and 4K video capabilities, you can capture stunning underwater images and videos. The camera is waterproof up to 100 feet (30 meters) without a housing, making it perfect for diving adventures. The built-in image stabilization ensures smooth footage, while the adjustable view angle allows you to capture the perfect shot. The Brave 4 also comes with a 2-inch IPS screen, making it easy to preview and playback your footage. However, the AKASO Brave 4 may not be the best choice for professional photographers or those looking for advanced features. The battery life could also be better, as it lasts for about 90 minutes of continuous recording. Despite these drawbacks, the AKASO Brave 4 is an excellent option for those looking for a budget-friendly underwater camera with impressive features.

The Olympus Tough TG-860 is a rugged and waterproof camera designed specifically for diving enthusiasts. With a waterproof rating of up to 50 feet, it is perfect for capturing your underwater adventures. The camera features a 16MP BSI CMOS sensor, allowing you to take high-quality photos and 1080p Full HD videos. The 5x optical zoom lens and built-in image stabilization ensure sharp and clear images, even in low-light conditions. The camera also has a 180-degree flip-up LCD screen, making it easy to frame your shots and take selfies underwater. One downside of the Olympus Tough TG-860 is that it does not have built-in Wi-Fi, which means you will need to transfer your photos and videos manually. However, considering its affordable price and impressive features, it is a great option for scuba divers looking for a reliable underwater camera under $300.

The Fujifilm FinePix XP140 is a stylish and feature-packed underwater camera that offers excellent performance for scuba diving enthusiasts. With a waterproof rating of up to 82 feet, it is perfect for capturing your underwater adventures. The camera features a 16.4-megapixel BSI CMOS sensor, ensuring high-quality images even in low-light conditions. The 5x optical zoom allows you to get closer to your subjects, while the built-in image stabilization helps reduce camera shake and blur. The FinePix XP140 also offers 4K video recording, allowing you to capture stunning underwater footage. One downside to the Fujifilm FinePix XP140 is its limited manual controls, which may not be ideal for advanced photographers. However, for those looking for a stylish, easy-to-use, and feature-packed underwater camera under $300, the FinePix XP140 is an excellent choice.

The GoPro HERO7 Silver is a popular choice among scuba divers and underwater enthusiasts, thanks to its excellent underwater capabilities and user-friendly features. This action camera is waterproof up to 33 feet (10 meters) without the need for an additional housing, making it perfect for shallow dives and snorkeling. The 4K video resolution and 10MP photo quality ensure that you capture stunning underwater footage and images. The built-in image stabilization helps to reduce camera shake, resulting in smooth and stable videos. One downside of the GoPro HERO7 Silver is that it lacks the advanced features found in the more expensive GoPro models, such as the HyperSmooth stabilization and RAW photo format. However, for those on a budget, the HERO7 Silver offers a great balance between price and performance, making it an excellent choice for scuba diving under $300.