Green Turtle: Where and when to dive with them

When encountering a Green Sea Turtle, maintaining a respectful distance is paramount. Keep at least three to five meters (10-15 feet) away to avoid disturbing their natural behavior. Never chase, touch, or attempt to feed a turtle; touching them can remove their protective mucus layer, making them vulnerable to disease and stress. Observe them calmly from a distance, allowing them to continue grazing or resting undisturbed. Look for turtles resting under large coral overhangs or within sandy patches near seagrass beds. Their camouflaged shells can make them surprisingly difficult to spot against the reef until they move. Pay attention to divers who have paused, as they may have already sighted a turtle. When a turtle surfaces for air, it's an excellent opportunity for a clear view, but remember to stay below them and avoid blocking their path to the surface. Strong currents can be a factor in some turtle habitats, so ensure you are proficient in drift diving techniques if applicable. Always carry your certification card and adhere to all marine park regulations, which often include strict rules against touching or disturbing marine life. In many regions, Green Sea Turtles are a protected species, and disturbing them can result in significant penalties. Be a responsible diver and help protect these magnificent marine reptiles by leading by example.

Encounters with Green Sea Turtles can be excellent year-round in many stable tropical locations, but certain seasons offer peak viewing opportunities based on local conditions and behaviors. In the Caribbean, particularly in places like the Cayman Islands and Belize, the drier months from December to May often provide the best visibility and calmest seas, making turtle spotting more reliable. During the summer months (June to September), these turtles are often more active near nesting beaches, though divers will typically observe them in foraging areas rather than directly on nesting sites. For Hawaii, particularly around Kona, turtles are present year-round, but the calmer summer and fall months (May to October) generally offer the most comfortable diving conditions and higher chances of encounters as they bask or feed along the extensive reef systems. In the Indo-Pacific, such as Indonesia (e.g., Raja Ampat) or parts of the Great Barrier Reef, diving for turtles is generally excellent during the dry season (May to October) when cooler currents bring richer nutrients, supporting vibrant seagrass beds they feed upon. Seasonal variations can also influence their presence in certain areas due to migration patterns between nesting and feeding grounds, though these migrations are often lengthy and less predictable for divers. Always check local dive shop reports for specific seasonal abundance.

The Green Sea Turtle, *Chelonia mydas*, inhabits tropical and subtropical ocean waters worldwide. As juveniles, they are often found in pelagic environments, drifting with ocean currents. However, as they mature, they transition to more coastal waters, particularly in areas rich with seagrass beds and algal reefs, which are their primary food sources. Significant populations can be found in the Caribbean Sea, around locations such as the Florida Keys, Grand Cayman, and Belize, where they frequent lush seagrass meadows. In the Pacific Ocean, they are commonly observed around Hawaii's 'Big Island', particularly at dive sites like Kona, where they often rest in healthy coral formations. Other important habitats include the Great Barrier Reef in Australia, Indonesian waters around Raja Ampat, and various islands in the Indian Ocean such as the Maldives and Seychelles. They utilize different habitats throughout their life cycle, from open ocean to shallow foraging grounds and specific nesting beaches (though divers encounter them primarily in foraging and resting areas). They are often seen resting under coral bommies or in crevices within reefs, especially during the day, before moving to shallower feeding grounds.

Green Sea Turtles are primarily herbivores as adults, with a diet consisting almost exclusively of seagrasses and marine algae. Their serrated jaws are perfectly adapted for grazing on these tough plant materials. They play a crucial role in maintaining the health of seagrass beds by 'mowing' them, which prevents overgrowth and promotes new, nutrient-rich growth. While juveniles may eat a more omnivorous diet, including small invertebrates, adults are almost strictly vegetarian. They are often observed slowly grazing across shallow, sandy bottoms where seagrass thrives, such as the vast meadows off Akumal, Mexico, or in the Turks and Caicos Islands. They have a slow digestive process and spend significant time foraging to meet their nutritional needs. This specialized diet is what gives their fat its greenish hue, hence their common name.