Bodyboarding is a kind of wave riding (sometimes called Boogieboarding). The average board consists of a small, rectangular piece of hydrodynamic foam. The board can be shaped and adapted to ...

The Mauthner (M-)cell of teleost fish, first identified by the Viennese ophthalmologist Ludwig Mauthner, and its associated neural circuit mediates an escape response called the C-start or C-startle ...

Recent advances have permitted the construction of large dams and reservoirs and channels. These have required the development of new spillway designs. A key feature of a spillway system is ...

Nayachar (Bengali: নয়াচর) is an island in the Hooghly River, off Haldia in Purba Medinipur in the Indian state of West Bengal. The island inhabited by few fishermen ...

Lake retention time (also called the residence time of lake water, or the water age or flushing time) is a calculated quantity expressing the mean time that water (or some ...

Sharks (superorder Selachimorpha) are a type of fish with a full cartilaginous skeleton and a highly streamlined body. The earliest known sharks date from more than 420 million years ...