Despite this, the island enjoys a wide variety of wildlife and landscapes. Jersey has 45 miles (72 km) of beautiful coastline which, due to its position within the Bay of St Malo, experiences dramatic tidal range. Spring tides, which occur every two weeks, see rises and falls of as much as 40 feet (12 metres). In fact, by including the island’s offshore reefs, on low water spring tides the island’s surface area doubles in size.  All this tidal movement creates a broad range of habitats along the island’s shores that are host to an incredibly diverse marine fauna and flora. Species include the snakelocks anenome, greater, snake and worm pipe fish, anemone shrimps and several species of sea spiders.