两只海牛，佛罗里达州的水晶河，美国

aquatic mammal animal mammal outdoor marine mammal water dolphin fish whale blue flock bird sunset wave seal harbor seal sea lion sky shark fin cartilaginous fish aquarium underwater ocean swimming ground laying earless seal concrete cement close rays and skates great white shark cetacea stingray bottlenose dolphin common bottlenose dolphin transport sailing vessel boat flying lake group sea several ice frozen day