30 If you are a regular diver, you would probably .
(A)hire boats and take tourists to watch whales
(B)  take plenty of pictures and sell them to magazines
(C)track down the paths of individual whales 
(D)check the life list of sea animals every year

The beautiful scenery鄉村, 風景、劇院 and amazing creatures生物 found below the waves揮手、反復移動 are what draw most divers to the ocean. Some divers take up photography as a hobby. Diving（運動）跳水 magazines have been known to buy photographs of rare sea life from regular divers. Above the surface, hired boats take tourists on whale watching trips. Whale鯨 watching during the right season allows people to see not only a variety of whale鯨 species, but seals海豹 and other sea animals as well. Some of the more eager熱切、望 watchers may even travel hundreds of miles to follow the paths of individual whales鯨. Meanwhile在此期間, bird watchers work hard to discover new bird species. Serious bird watchers bring  along帶…來 their life lists, in which they record every species of bird that they have seen in the wild. Like whale鯨 watchers, “birders” sometimes hop單腳跳 continents翻大洲 on their mission工作、任務 to add new species to their lists. Collecting parts of animals is a common hobby. While buying or selling ivory象牙 is illegal, it can be made into profitable有盈利 items such as chess sets一套西洋棋, piano keys, and jewelry. Animal skins and furs毛髮, （動物的）毛 and entire stuffed填滿 animals are often found at homes as decorating items. And the hobby of butterfly collecting is one of the oldest in the world. Russian author作家 Vladimir Nabokov was known for his life-long passion for collecting butterflies. The world’s largest collection is found in Costa Rica, a nation with more butterfly species than the entire Africa.

Diving magazines have been known to buy photographs of rare sea life from regular divers.