Counterilluminating animals use ventral photogenic organs (photophores) to mimic the residual downwelling light and cloak their silhouette from upward-looking predators. To cope with variable conditions of pelagic light environments they typically adjust their luminescence intensity. Here, we found evidence that bioluminescent sharks instead emit a constant light output and move up and down in the water column to remain cryptic at iso-luminance depth. We observed, across 21 globally distributed shark species, a correlation between capture depth and the proportion of a ventral area occupied by photophores. This information further allowed us, using visual modelling, to provide an adaptive explanation for shark photophore pattern diversity: i...
In this chapter, Claes and Mallefet explore in new detail the evolution and behavioral ecology of bi...
We report the discovery of light organs (photophores) adjacent to the dorsal defensive spines of a s...
Luminous sharks are represented in three families, Etmopteridae, Dalatiidae and Somniosidae. Even st...
Counterilluminating animals use ventral photogenic organs (photophores) to mimic the residual downwe...
Counterilluminating animals use ventral photogenic organs (photophores) to mimic the residual downwe...
Sharks from the Etmopteridae and Dalatiidae families are among the most enigmatic bioluminescent org...
Sharks from the Etmopteridae and Dalatiidae families are among the most enigmatic bioluminescent org...
Many midwater animals emit ventral light to hide their silhouette in the water column. This phenomen...
Many midwater animals emit ventral light to hide their silhouette in the water column. This phenomen...
Marine fishes are the only vertebrates able to produce visible light. For more than two centuries, b...
Bioluminescence is a common feature in the permanent darkness of the deep-sea. In fishes, light is e...
In the depths of our oceans, Etmopteridae and Dalatiidae, two luminous shark families, have evolved ...
In the permanent darkness of the deep-sea, a vast majority of organisms including molluscs, crustace...
Etmopterid and dalatiid sharks are among the most enigmatic bioluminescent organisms. They display t...
In the permanent darkness of the deep-sea, a vast majority of organisms including molluscs, crustace...
In this chapter, Claes and Mallefet explore in new detail the evolution and behavioral ecology of bi...
We report the discovery of light organs (photophores) adjacent to the dorsal defensive spines of a s...
Luminous sharks are represented in three families, Etmopteridae, Dalatiidae and Somniosidae. Even st...
Counterilluminating animals use ventral photogenic organs (photophores) to mimic the residual downwe...
Counterilluminating animals use ventral photogenic organs (photophores) to mimic the residual downwe...
Sharks from the Etmopteridae and Dalatiidae families are among the most enigmatic bioluminescent org...
Sharks from the Etmopteridae and Dalatiidae families are among the most enigmatic bioluminescent org...
Many midwater animals emit ventral light to hide their silhouette in the water column. This phenomen...
Many midwater animals emit ventral light to hide their silhouette in the water column. This phenomen...
Marine fishes are the only vertebrates able to produce visible light. For more than two centuries, b...
Bioluminescence is a common feature in the permanent darkness of the deep-sea. In fishes, light is e...
In the depths of our oceans, Etmopteridae and Dalatiidae, two luminous shark families, have evolved ...
In the permanent darkness of the deep-sea, a vast majority of organisms including molluscs, crustace...
Etmopterid and dalatiid sharks are among the most enigmatic bioluminescent organisms. They display t...
In the permanent darkness of the deep-sea, a vast majority of organisms including molluscs, crustace...
In this chapter, Claes and Mallefet explore in new detail the evolution and behavioral ecology of bi...
We report the discovery of light organs (photophores) adjacent to the dorsal defensive spines of a s...
Luminous sharks are represented in three families, Etmopteridae, Dalatiidae and Somniosidae. Even st...