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animal-marino

 

Un antiguo animal marino, el cual ha sido bautizado como ‘fósil viviente’, ha sido redescubierto 30 años después. Se trata del Allonautilus scrobiculatus, una especie de molusco que lleva cerca de 500 millones de años nadando en las profundidades del océano. Peter Ward, biólogo de la Universidad de Washington, lo vio por primera vez en el Pacífico Sur, en los años 80.

Lea: NASA advierte: Nivel del mar subió casi 8 centímetros en el mundo

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El Allonautilus scrobiculatus se caracteriza por sus ‘costras’ y su ombligo, que ocupa el 20 por ciento del diámetro de la concha. Un accesorio distintivo de este molusco es una gruesa cubierta peluda y viscosa en su caparazón.

Por su incapacidad de aguantar el calor, este molusco vive durante el día en las profundidades, donde el agua es muy fría. Por ello, el equipo de investigadores de Ward, esperó a que cayera la noche e instalaron cebos de pescado y pollo a 400 metros bajo la superficia del mar.

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“Antes de esto, solo dos humanos habían visto el Allonautilus scrobiculatus. Mi colega Bruce Saunders del Bryn Mawr College y yo. Cuando lo vimos por primera vez nos quedamos pasmados”, afirma Ward en su artículo publicado en ‘National Geographic’.

 

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