What happens next?

How to identify whales
Estimate the whale's size.
You may only see part of the animal, so figuring out its length can be difficult. Try to compare it to the length of a nearby object, such as a boat.

pick from the following.
(a). In this case, find an animal that is at least 8-10 feet (2.4-3.9 m) in length. Take a photograph and compare the differences between the pictures to determine the whale's length.
(b). Estimate the whale's general size range, such as 10 to 20 ft (3.0 to 6.1 m). For example, animals under 10 ft (3.0 m) are probably dolphins or porpoises.
(c). Keep in mind that even in water it is often easy to become aware of the whale's movements. If you are certain of its height from the surface, measurements will be more difficult.
(d). For a more precise rough answer, try looking up the whale. Whale legs extend up to around 2 m (about 1 meter) in height from parallel to a lip or on a stand on land.
(b).