In this season, many of us suffer from allergy--- cedar pollen or hay fever. Some of plants---Spermatophytes---spread their protein-rich sperms into the air for their generation. In the same way, urchins spread their, also protein-rich, sperms and eggs into the sea water in their breeding seasons.

Recently, it was discovered that some of cetaceans have allergy for it. In sometimes, the allergy symptoms are quite serious. Since they spend most of times under water, their allergic reaction on the respiratory systems could be life-threatening. How can we save them?