No high seas without gulls and... albatrosses. They usually soar, so one 'pose' of this Diomedea melanophris object in textured tgo format will do nicely. 
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A colorful high-quality apple! It comes in three quality levels ranging from M to XL. M is meant to be used for populations and other applications were performance is more important than quality. XL is meant for close-ups. It consumes a small bit ...  
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A earthly landscape is not complete without living creatures, so enliven your renders with one, two, or a flock of buzzards/hawks. Low-poly, but quite good in close-up. Modeled by a biologist!  
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A Common Gull, gliding effortlessly through the sky. Make sure the scale is set to about 0.03 (which is about 1 meter span). I added just a little displacement, but it's not necessary.  
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