The spelling of 'seahorse' vs 'sea lion'

[Mehrgan]

Hi there,

Is there any rules why there should be such differences in spelling where there seems to be no need for?! It'd be great if you could introduce me some sources or titles I can study.

 

[Tarheel]

Hi there,

Are there any rules about spelling I can learn to help me with that?!

I don't know about any rules, but sometimes it's one word, and sometimes it's two. Him.

seahorse
seascape
seafarer
seamanship
seaman

sea lion
sea otter
sea anemone
sea voyage

Hm.

 

[Barque]

There aren't any rules. I'm afraid you'll just have to learn them by experience.

sea urchin
seaweed
seabed, but sea floor
seashore

I believe sea horse can be spelt both with and without a space.

 

[Tarheel]

sea cucumber
sea battle

 

[Tdol]

sea slug

 

[5jj]

see-saw

 

[Rover_KE]

It'd be great if you could introduce me some sources or titles I can study.

Click here for a start. (That's only the first page.)