Sentences with phrase «ventral pleats»

These whales are especially characterized by the dorsal fins present in their ventral pleats and their backs.

While this humpback bottom feeding behavior occurs at relatively slow speeds, it does involve the expansion of ventral pleats, which was once thought to require high speeds, as in lunging.

The Crittercam video showed that sometimes a whale's rostrum (a snoutlike projection) came in contact with the seafloor (which explains scarring seen on some whales), kicking up sand in clouds, and that the whales» ventral pleats expanded, indicating that they were feeding.

Not exact matches

In the recent studies, researchers showed that this behavior happens for extensive periods of time at or near the seafloor, that it occurs in the presence of concentrations of sand lance (a preferred prey fish), and that the behavior is accompanied by the expansion of the animal's ventral (throat) pleats.