Quadrilaterals, diagonal of a quadrilateral, types of quadrilaterals, rectangle, square, parallelogram, rhombus, trapezium, regular trapezium, kite, angle sum of a quadrilateral and applying properties of quadrilaterals to solve problems.
Sperm whales make some of the longest dives achieved by mammals, with some lasting up to 90 minutes, while dolphins and other whales can stay underwater for 20 minutes. The longest time a human has held their breath for under water is 19 minutes â set by a Swiss freediver called Peter Colat.
How long can a common bottlenose dolphin hold its breath? On average, a common bottlenose dolphin can hold its breath for 5 - 7 minutes. How does a dolphin sleep? Because they are air-breathing mammals living in the water, dolphins cannot sleep the way that you and I can.