It does not inhabit the south. Not because it cannot survive there. Because it evolved in tropical regions and requires warm water. Aipysurus laevis exists only in northern waters, a product of geographic isolation and thermal limits. The species inhabits coral reefs and rocky areas throughout tropical regions. It prefers shallow waters with complex structure, thriving where prey is abundant. Unlike land snakes, it has a flattened tail adapted for swimming. Adults reach up to 2 metres in length, with olive-green colouration that blends with reef structures. Their venom is potent but rarely used on humans. Rare visitor to northern New Zealand waters. Diet consists primarily of fish eggs. It also consumes small fish and crustaceans when available. This diet requires precise hunting skills to extract eggs from crevices. Specialised anatomy allows access to protected prey in reef structures. Breeding occurs in water, with females giving birth to live young. This strategy maximises survival chances in a predator-rich environment. No nesting on land required. Classified as Data Deficient in New Zealand waters, the olive sea snake is a rare visitor to northern regions. Global populations face threats from habitat loss and climate change. Conservation efforts focus on protecting coral reefs and monitoring populations. Each surviving juvenile represents a victory against overwhelming odds. The olive sea snake persists where protection is maintained. A testament to resilience in a changing ocean.