The Trustees, a statewide land-conservation group, offers several fascinating 2 1/2-hour tours by safari vehicle or kayak around this idyllic nature preserve. The 2-hour Natural History kayak tour on Poucha Pond and Cape Poge Bay is designed for all levels. It costs $40 for adults and $18 for children up to age 15. There are also tours of the Cape Poge lighthouse at 9am, noon, and 2:30pm. The cost is $25 for adults and $12 for children 15 and under. Call tel. 508/693-7392 for details.