A few hundred metres from the shore at Avarua is the remains of the RMS Maitai, an old cargo ship that ran aground in Rarotonga on Christmas Day in 1916. Over the last century or so the wreck has slowly torn apart and the ocean and coral have claimed it as their own, so now only a small section remains visible above the surface. If you’re a good swimmer and feeling adventurous you can swim out to the wreck and snorkel around it, keeping an eye out for all kinds of marine life.