algal-forager amblyrhynchus-cristatus black color colored colors colour coloured colours crest-of-spines forage forager graceful-swimmer heat-absorption Iguana large lethargic lethargy lizard long-sharp-claws marine-iguana marine-reptile reptile reptilian salt salty sea spikes spiky spiky-dorsal-fin subtidal-algae-forager sun-absorption Sunbather adorable animal aquatic artesian blue creature cute dolphin enjoy fin flipper freedom friend friendly fun gray happy head intelligent joy jump kiss love mammal marine mouth nature nose ocean play playful pool pose show smart smile sonar speed splash summer swim swimmer symbol water waves wild World cooling fins gradient lines texture tubes