Related Clues:

• Sea creature spread out, with head tucked behind tail
• Sea denizen manta's put in a tizzy with ease, it's said
• Sirenian mammal
• Fellow relaxed but not as sea creature appears
• To find sea cow, chap needs a little support
• This swimmer's crew had a supporter of course
• Aquatic creature providing the human race with a starting-point
• Fellow with Peg protecting a larger aquatic mammal
• Sea cow of tropical Atlantic coasts and estuaries
• Herbivorous marine mammal
• Emanate from an aquatic mammal
• Mammal grazed with hair hanging round
• Perhaps work at an area for drivers and water animal
• Everglades mammal
• Sea cow's sexual partner crossing an estuary at first