1.   All these creatures are said to be vulnerable because they bear few young or are found in only a few restricted habitats, or both.

2.   Harbor seals bear their young on icebergs in front of Johns Hopkins Glacier.

3.   Moreover, aphids bear their young live, rather than laying eggs that might be vulnerable to predators.

4.   Winter means the return of the humpback whale, which migrates from Alaskan to warmer Maui waters to bear its young.