Whale Population Recording Sheet - Answer Key
Directions: Calculate the losses and populations for your whale species over
the course of three years, assuming a 12 percent decline in
population each year. Note: If you get answers with a decimal, round to the nearest whole number. If the decimal is 0.5 or greater, round up. If the decimal
is less than 0.5, round down.
Reference: Whale Populations
| Species
Name |
Latest Level
(see Whale Populations) |
Losses |
Year 1
Level |
Losses |
Year 2
Level |
Losses |
Year 3
Level |
| Blue |
11,700 |
1,404 |
10,296 |
1,236 |
9,060 |
1,087 |
7,973 |
| Bowhead |
7,800 |
936 |
6,864 |
824 |
6,040 |
725 |
5,315 |
| Bryde's |
43,000 |
5,160 |
37,840 |
4,541 |
33,299 |
3,996 |
29,303 |
| Fin |
110,000 |
13,200 |
96,800 |
11,616 |
85,184 |
10,222 |
74,962 |
| Gray |
18,000 |
2,160 |
15,840 |
1,901 |
13,939 |
1,673 |
12,266 |
| Humpback |
10,000 |
1,200 |
8,800 |
1,056 |
7,744 |
929 |
6,815 |
| Minke |
880,000 |
105,600 |
774,400 |
92,928 |
681,472 |
81,777 |
599,695 |
| Right |
3,200 |
384 |
2,816 |
338 |
2,478 |
297 |
2,181 |
| Sei |
54,000 |
6,480 |
47,520 |
5,702 |
41,818 |
5,018 |
36,800 |
| Sperm |
1,950,000 |
234,000 |
1,716,000 |
205,920 |
1,510,080 |
181,210 |
1,328,870 |
Whale Population Recording Sheet
Return to the Declining Whale Populations lesson plan.
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