These waters witness the reproduction and growth of soft, delicate bath sponges whose prices run as high as 150 francs apiece: the yellow sponge from Syria, the horn sponge from Barbary, etc. But since I had no hope of studying these zoophytes in the seaports of the Levant, from which we were separated by the insuperable Isthmus of Suez, I had to be content with observing them in the waters of the Red Sea.
Allí se reproducen y se desarrollan esas esponjas finas y suaves cuyo valor se eleva hasta ciento cincuenta francos, la esponja rubia de Siria, la dura de Berbería, etc. Pero como no podía esperar estudiar esos zoófitos en el Mediterráneo, del que nos separaba el infranqueable istmo de Suez, me contenté con observarlos en el mar Rojo.