Pelagic Callipygian

cal·li·pyg·i·an        /ˌkæl əˈpɪdʒ i ən/ [kal-uh-pij-ee-uh n]
–adjective
having well-shaped buttocks.  

Also, cal·li·py·gous        /ˌkæl əˈpaɪ gəs/ [kal-uh-pahy-guh s]
  _____

[Origin: 1640–50; < Gk kallipýg(os) with beautiful buttocks; referring to a statue of Aphrodite (kalli- calli- + pyg( ) rump + -os adj. suffix) + -ian ]

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.  

American Heritage Dictionary -
cal·li·pyg·i·an        (kāl'ə-pĭj'ē-ən)
adj.   Having beautifully proportioned buttocks.   

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pe·lag·ic        /pəˈlædʒ ɪk/ [puh-laj-ik]
–adjective
1.    of or pertaining to the open seas or oceans.     
2.    living or growing at or near the surface of the ocean, far from land, as certain organisms.   
Compare neritic, oceanic.
  _____

[Origin: 1650–60; > L pelagicus > Gk pelagikós, equiv. to pélag(os) the sea + -ikos -ic ]
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

American Heritage Dictionary - Cite This Source
pe·lag·ic        (pə-lāj'ĭk)  
adj.   Of, relating to, or living in open oceans or seas rather than waters adjacent to land or inland waters: pelagic birds.