The New Zealand Division of the Royal Navy became the Royal New Zealand Navy (RNZN) from 1 October 1941, in recognition of the fact that the naval force was now largely self-sufficient and independent of the Royal Navy.Ships thereafter were prefixed HMNZS (His/Her Majesty's New Zealand Ship).he first purchase by the New Zealand government for the New Zealand Naval Forces was the cruiser HMS Philomel, which escorted New Zealand land forces to occupy the German colony of Samoa in 1914.
A captive hermit crab's life span depends on how well he's cared for. Jeffrey Hamilton/Digital Vision/Getty Images. If the wild hermit crab is fortunate enough to live his life in his natural habitat, he can live up to 30 years. A crab in captivity may have a much shorter life, not even reaching 1 year.
When eating food, mud crabs use their extremely powerful claws-the larger claw as a âcrusherâ and the smaller claw as a âcutterâ. Mud crabs also use their claws to defend themselves and can even drop a claw to facilitate escape. A new, fully functional claw will grow back in three to four months.Reproduction. The male can only mate with a female while her shell is soft, a period of about 48 hours after moulting.he megalopa later moults into a stage one crab. Stage one crabs are only about 4 mm wide, but frequent moults mean that they grow very quickly. It is thought that wild mud crabs grow to around 10 cm in width in about a year and become sexual mature in about two years.