According to Tennyson in "The Passing of Arthur", which knight stayed with the dying King Arthur to the end and threw the sword Excalibur into the lake?
Correct Answer: Etruscan pygmy shrew
The heart rate of an Etruscan shrew can reach up to 1,511 beats per minute (25 beats/s). The Etruscan shrew (Suncus etruscus) is the smallest known extant mammal by mass, weighing only about 1.8 g (0.063 oz) on average. The typical heart rate for both a hummingbird and the Pygmy shrew found in the Americas is 1,200 beats per minute. The bumblebee bat is regarded as the smallest mammal by skull size and body length; its heart rate is about 1,000 per minute.
Which of these, father and son, between them over the period 1486 to 1548 explored first the east coast of the Americas from parts of Canada to Uruguay, including parts of Argentina, and later the west coast?