Closeup of small fish swimming over bleached Acropora finger corals

Bare Beauty: White Reefs in Clear Waters.

A close-up free stock video shows small fish actively moving around and above patches of bleached Acropora finger corals. The corals, primarily white and brittle-looking, form dense clusters across the reef, stretching out like thin, skeletal branches. Black-and-white Chromis fish are seen swimming in various directions over and around the corals. The background of this underwater shot reveals more coral structures and hints of other marine life in the distance, all under the blue, clear water typical of coral reef environments. This footage shows the dying reef habitat and the resilience of reef fish, even amid coral bleaching.

4K Undersea Clip of Dying Hard Corals in Crystal-Clear Waters. 

Filmed in ultra-high-definition 4K and available in HD (1080p), this footage was shot with the best professional equipment, ensuring sharp clarity. Provided as free stock footage to raise awareness about coral bleaching, it is available in both landscape (16:9) and vertical (9:16) formats, making it suitable for various platforms, including social media like Instagram Reels, TikTok, and YouTube Shorts. Its quality and adaptability make it ideal for environmental campaigns, educational content, and NGO projects focused on coral resilience and climate science.

Temperature tolerance among coral species varies widely, with some corals naturally more resilient to heat stress than others. For instance, corals like *Porites* and *Orbicella* species tend to tolerate slightly higher temperatures, while species such as *Acropora*, particularly finger corals, are more sensitive and prone to bleaching at lower temperature increases. Research on the Great Barrier Reef shows that certain coral species possess genetic markers that enhance heat tolerance, allowing them to better survive in warmer waters. This diversity in thermal tolerance is critical for the resilience of reef ecosystems, as heat-resistant corals can provide stability and habitat continuity during and after bleaching events.