Noble fir trees grow in the mountains of Washington State and can live for almost 1,000 years!
The secret language of mantis shrimps
The secret language of mantis shrimps Researchers in Brisbane, Australia, have
discovered that mantis shrimps can see polarised light. These
shrimps are the first crustaceans known to have polarisation
vision. The human eye cannot detect polarised light but the shrimps
have learned to distinguish different polarisation patterns in the
lab. Shrimps' bodies carry polarisation patterns that appear
striking to fellow mantis shrimps. These patterns are mostly used
in threat display, but may also be used to solicit
matings. 17 JULY 1999, P. 25
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