References in local legend8 indicate there have been dolphins in the Shannon estuary for generations and they may even have been resident there as far back as the 6th century9.
They are regularly seen by passengers on the Shannon ferry and an estimated 25,000 tourists every year take special sightseeing tours on local boats to visit them.
练习:
1. The difference in eating habits between the bottle-nose dolphins and the sperm whales interested the SDWF scientists.
A Right B Wrong C Not mentioned
2. Ronan Hickey analysed almost 2,000 different dialects of the bottle-nose dolphins.
A Right B Wrong C Not mentioned
3. Of the 32 categories, eight were produced only by the Irish dolphins.
A Right B Wrong C Not mentioned
4. Whistles could also be used to communicate between adult dolphins and baby dolphins.
A Right B Wrong C Not mentioned
5. Sperm whales can produce stronger ultrasonic waves to kill their prey than dolphins.
A Right B Wrong C Not mentioned
6. As early as the 6th century, Irish fishermen started raising dolphins in the Shannon estuary.
A Right B Wrong C Not mentioned
7. Irish dolphins attract tourists and over 25,000 people come to see them every year.
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