galapagos marine iguanas amblyrhynchus cristatus with a sally lightfoot crab on lava rock, galapagos islands

amblyrhynchus america animal aquatic archipelago conservation crab cristatus darwin ecuador endemic equator exotic fauna galapagos grapsus gravel grey group iguanas island islands lazing life lightfoot lizard marine mertensi nature ocean outdoors prehistoric red reptile reptilian rock sally scales sea shore shoreline south tourism travel tropical water waves white wildlife